Addition

Here is a list of all of the skills that cover addition! These skills are organized by grade, and you can move your mouse over any skill name to preview the skill. To start practicing, just click on any link. IXL will track your score, and the questions will automatically increase in difficulty as you improve!

Here is a list of all of the skills that cover addition! To start practicing, just click on any link.

Pre-K skills

  1. V.1
    Put together numbers using cubes - sums up to 5
  2. V.2
    Build cube trains to add up to 5 - words
  3. V.3
    Add with cubes - sums up to 5
  4. V.4
    Build cube trains to add up to 5 - addition sentences
  5. V.5
    Add with pictures - sums up to 5
  6. V.6
    Addition sentences up to 5 - which model matches?
  7. V.7
    Addition sentences up to 5 - what does the model show?
  8. V.8
    Addition word problems with pictures - sums up to 5
  9. W.1
    Put together numbers using cubes - sums up to 10
  10. W.2
    Build cube trains to add up to 10 - words
  11. W.3
    Add with cubes - sums up to 10
  12. W.4
    Build cube trains to add up to 10 - addition sentences
  13. W.5
    Add with pictures - sums up to 10
  14. W.6
    Addition sentences up to 10 - which model matches?
  15. W.7
    Addition sentences up to 10 - what does the model show?
  16. W.8
    Addition word problems with pictures - sums up to 10

Kindergarten skills

  1. N.1
    Put together numbers using cubes - sums up to 5
  2. N.2
    Build cube trains to add up to 5 - words
  3. N.3
    Addition sentences up to 5 - which model matches?
  4. N.4
    Addition sentences up to 5 - what does the model show?
  5. N.5
    Write addition sentences for pictures - sums up to 5
  6. O.1
    Add with cubes - sums up to 5
  7. O.2
    Build cube trains to add up to 5 - addition sentences
  8. O.3
    Add with pictures - sums up to 5
  9. O.4
    Add two numbers - sums up to 5
  10. O.5
    Complete the addition sentence - sums up to 5
  11. P.1
    Take apart numbers using cubes - sums up to 5
  12. P.2
    Take apart numbers up to 5 - addition sentences
  13. P.
    New! Take apart numbers in different ways - sums up to 5
  14. P.3
    Make a number using addition - sums up to 5
  15. Q.1
    Build cube trains to solve addition word problems - sums up to 5
  16. Q.2
    Addition word problems with pictures - sums up to 5
  17. Q.3
    Write addition sentences for word problems with pictures - sums up to 5
  18. Q.4
    Addition word problems - sums up to 5
  19. Q.5
    Model and write addition sentences for word problems - sums up to 5
  20. R.1
    Put together numbers using cubes - sums up to 10
  21. R.2
    Build cube trains to add up to 10 - words
  22. R.3
    Addition sentences up to 10 - which model matches?
  23. R.4
    Addition sentences up to 10 - what does the model show?
  24. R.5
    Write addition sentences for pictures - sums up to 10
  25. R.6
    Turn words into an addition sentence - sums up to 10
  26. S.1
    Add with cubes - sums up to 10
  27. S.2
    Build cube trains to add up to 10 - addition sentences
  28. S.3
    Add with pictures - sums up to 10
  29. S.4
    Add 1 or 2
  30. S.5
    Add two numbers - sums up to 10
  31. S.
    New! Complete the addition sentence to make 10 - with models
  32. S.6
    Complete the addition sentence to make 10
  33. S.7
    Complete the addition sentence - sums up to 10
  34. S.8
    Add in any order
  35. T.1
    Take apart numbers using cubes - sums up to 10
  36. T.2
    Take apart 10 using cubes
  37. T.3
    Decompose a number up to 10
  38. T.4
    Take apart numbers up to 10 - addition sentences
  39. T.5
    Take apart 10 - addition sentences
  40. T.
    New! Take apart numbers in different ways - sums up to 10
  41. T.6
    Make a number using addition - sums up to 10
  42. U.1
    Build cube trains to solve addition word problems - sums up to 10
  43. U.2
    Addition word problems with pictures - sums up to 10
  44. U.3
    Write addition sentences for word problems with pictures - sums up to 10
  45. U.4
    Addition word problems - sums up to 10
  46. U.5
    Model and write addition sentences for word problems - sums up to 10
  47. BB.1
    Add or subtract - numbers up to 5
  48. BB.2
    Add or subtract - numbers up to 10
  49. BB.3
    Addition and subtraction - ways to make a number
  50. BB.
    New! Related facts - with models
  51. CC.1
    Addition and subtraction word problems with pictures
  52. CC.2
    Use cube trains to solve addition and subtraction word problems - up to 10
  53. CC.3
    Addition and subtraction word problems
  54. HH.3
    Make teen numbers: words
  55. HH.4
    Take apart teen numbers: words
  56. HH.5
    Make teen numbers: addition sentences
  57. HH.6
    Take apart teen numbers: addition sentences
  58. HH.7
    Make and take apart teen numbers: addition sentences

First-grade skills

  1. E.1
    Add with cubes - sums up to 10
  2. E.2
    Add with pictures - sums up to 10
  3. E.3
    Addition sentences up to 10: which model matches?
  4. E.4
    Addition sentences up to 10: what does the model show?
  5. E.5
    Write addition sentences for pictures - sums up to 10
  6. E.6
    Addition sentences using number lines - sums up to 10
  7. E.7
    Turn words into an addition sentence - sums up to 10
  8. F.1
    Add in any order
  9. F.2
    Add by counting on - sums up to 10
  10. F.
    New! Complete the addition sentence to make ten - with models
  11. F.3
    Complete the addition sentence to make ten
  12. G.1
    Addition facts - sums up to 10
  13. G.
    New! Take apart numbers in different ways - sums up to 10
  14. G.2
    Make a number using addition - sums up to 10
  15. G.3
    Ways to make a number - addition sentences up to 10
  16. H.1
    Addition word problems with pictures - sums up to 10
  17. H.2
    Write addition sentences for word problems with pictures - sums up to 10
  18. H.3
    Build cube trains to solve addition word problems - sums up to 10
  19. H.4
    Addition word problems - sums up to 10
  20. H.5
    Model and write addition sentences for word problems - sums up to 10
  21. H.6
    Addition sentences for word problems - sums up to 10
  22. M.1
    Fact families - up to 10
  23. M.3
    Addition and subtraction facts - up to 10
  24. M.
    New! Sort addition and subtraction facts - up to 10
  25. O.
    New! Addition and subtraction word problems with pictures - up to 10
  26. O.
    New! Use cube trains to solve addition and subtraction word problems - up to 10
  27. O.1
    Word problems with unknown sums and differences - up to 10
  28. O.
    New! Addition and subtraction sentences for word problems - up to 10
  29. O.2
    Word problems with change unknown - up to 10
  30. O.3
    Word problems with start unknown - up to 10
  31. O.4
    Word problems with one addend unknown - up to 10
  32. O.6
    Word problems involving addition and subtraction - up to 10
  33. O.
    New! Match word problems to addition and subtraction sentences - up to 10
  34. P.1
    Related addition facts
  35. P.2
    Addition sentences using number lines - sums up to 20
  36. P.3
    Add by counting on - sums up to 20
  37. P.4
    Add doubles - with models
  38. P.5
    Add doubles
  39. P.6
    Add doubles - complete the sentence
  40. P.7
    Add using doubles plus one
  41. P.8
    Add using doubles minus one
  42. P.9
    Add near doubles
  43. P.10
    Add three numbers - use doubles
  44. P.11
    Make ten to add - with models
  45. P.12
    Make ten to add
  46. P.13
    Add three numbers - make ten
  47. Q.1
    Adding 1
  48. Q.2
    Adding 2
  49. Q.3
    Adding 3
  50. Q.4
    Adding 4
  51. Q.5
    Adding 5
  52. Q.6
    Adding 6
  53. Q.7
    Adding 7
  54. Q.8
    Adding 8
  55. Q.9
    Adding 9
  56. Q.10
    Adding 10
  57. Q.11
    Adding 0
  58. Q.12
    Addition facts - sums up to 20
  59. Q.
    New! Sort addition facts - sums up to 20
  60. Q.13
    Make a number using addition - sums up to 20
  61. Q.14
    Add three numbers
  62. R.1
    Addition word problems - sums up to 20
  63. R.2
    Addition sentences for word problems - sums up to 20
  64. R.3
    Add three numbers - word problems
  65. S.2
    Relate addition and subtraction sentences
  66. V.1
    Addition and subtraction facts - up to 20
  67. V.2
    Addition and subtraction - ways to make a number
  68. X.1
    Word problems involving addition and subtraction - up to 20
  69. X.
    New! Match word problems to addition and subtraction sentences - up to 20
  70. X.2
    Addition and subtraction sentences for word problems - up to 20
  71. X.
    New! Word problems with both addends unknown - up to 20
  72. Y.1
    Addition and subtraction sentences to 10: which is true?
  73. Y.2
    Which sign makes the number sentence true? - up to 10
  74. Y.3
    Addition sentences: true or false?
  75. Y.4
    Addition sentences: which is true?
  76. Y.7
    Addition and subtraction sentences: which is true?
  77. Y.8
    Which sign makes the number sentence true?
  78. Z.1
    Complete the addition sentence - sums up to 10
  79. Z.3
    Complete the addition sentence - sums up to 20
  80. AA.8
    Regroup tens and ones - ways to make a number
  81. AA.9
    Regroup tens and ones
  82. CC.1
    Ten more or less
  83. CC.2
    Add multiples of ten
  84. CC.4
    Add and subtract multiples of ten
  85. DD.1
    Use models to add a multiple of ten and a one-digit number
  86. DD.2
    Add a multiple of ten and a one-digit number
  87. DD.3
    Use models to add a multiple of ten and a two-digit number
  88. DD.4
    Add a multiple of ten and a two-digit number
  89. DD.5
    Use models to add a two-digit and a one-digit number - without regrouping
  90. DD.6
    Add a two-digit and a one-digit number - without regrouping
  91. DD.7
    Use models to add a two-digit and a one-digit number - with regrouping
  92. DD.8
    Add a two-digit and a one-digit number - with regrouping
  93. DD.9
    Use models to add two-digit numbers - without regrouping
  94. DD.10
    Add two-digit numbers without regrouping - sums to 100
  95. DD.11
    Use models to add two-digit numbers - with regrouping
  96. DD.12
    Add two-digit numbers with regrouping - sums to 100
  97. DD.13
    Addition word problems - one-digit plus two-digit numbers
  98. DD.14
    Addition sentences for word problems - one-digit plus two-digit numbers

Second-grade skills

  1. E.
    New! Addition sentences for even and odd numbers
  2. F.1
    Add doubles using models
  3. F.2
    Add doubles
  4. F.3
    Add doubles - complete the sentence
  5. F.4
    Add near doubles
  6. F.5
    Addition sentences using number lines - sums to 20
  7. F.6
    Add by counting on - sums to 20
  8. F.7
    Make ten to add
  9. F.8
    Add zero
  10. G.1
    Add one-digit numbers - sums to 10
  11. G.2
    Add one-digit numbers
  12. G.
    New! Sort addition facts - sums to 20
  13. G.3
    Addition word problems - sums to 20
  14. G.4
    Addition sentences for word problems - sums to 20
  15. G.5
    Complete the addition sentence - sums to 20
  16. G.6
    Balance addition equations - sums to 20
  17. G.7
    Which addition sentence is true? - sums to 20
  18. G.8
    Add three one-digit numbers
  19. G.9
    Addition word problems - three one-digit numbers
  20. G.10
    Add four or more one-digit numbers
  21. G.11
    Addition word problems - four or more one-digit numbers
  22. J.1
    Addition and subtraction sentences using number lines - up to 20
  23. J.2
    Addition and subtraction - up to 20
  24. J.3
    Ways to make a number using addition and subtraction - up to 20
  25. J.4
    Balance addition and subtraction equations - up to 20
  26. J.5
    Which addition or subtraction sentence is true? - up to 20
  27. J.6
    Write the addition or subtraction rule for an input/output table - up to 20
  28. K.2
    Addition and subtraction word problems - up to 20
  29. K.
    New! Match word problems to addition and subtraction sentences - up to 20
  30. K.3
    Two-step addition and subtraction word problems - up to 20
  31. M.1
    Break apart a one-digit number to add
  32. M.2
    Use models to add a two-digit and a one-digit number - without regrouping
  33. M.3
    Use models to add a two-digit and a one-digit number - with regrouping
  34. M.4
    Use number lines to add two-digit numbers
  35. M.5
    Break apart a two-digit number to add - sums to 100
  36. M.6
    Use compensation to add on a number line - up to two digits
  37. M.7
    Use compensation to add - up to two digits
  38. M.8
    Use models to add two-digit numbers - without regrouping
  39. M.9
    Use models to add two-digit numbers - with regrouping
  40. M.10
    Use place value to add two-digit numbers - without regrouping
  41. M.11
    Use place value to add two-digit numbers - with regrouping
  42. N.1
    Add a two-digit and a one-digit number - without regrouping
  43. N.2
    Add a two-digit and a one-digit number - with regrouping
  44. N.3
    Add multiples of 10
  45. N.4
    Add two-digit numbers without regrouping - sums to 100
  46. N.5
    Add two-digit numbers with regrouping - sums to 100
  47. N.6
    Add two-digit numbers - sums to 100
  48. N.
    New! Add two-digit numbers vertically - sums to 100
  49. N.7
    Addition word problems - up to two digits
  50. N.8
    Ways to make a number using addition
  51. N.9
    Complete the addition sentence - up to two digits
  52. N.10
    Write the addition sentence - up to two digits
  53. N.11
    Balance addition equations - up to two digits
  54. N.12
    Add two-digit numbers - sums to 200
  55. N.13
    Add two-digit numbers vertically - sums to 200
  56. N.14
    Add three numbers up to two digits each
  57. N.15
    Addition word problems - three numbers up to two digits each
  58. N.16
    Add four numbers up to two digits each
  59. N.17
    Add three or four numbers vertically - up to two digits each
  60. N.18
    Addition word problems - four numbers up to two digits each
  61. Q.1
    Add and subtract numbers - up to 100
  62. Q.3
    Which sign (+ or -) makes the number sentence true? - up to 100
  63. Q.4
    Ways to make a number using addition and subtraction - up to 100
  64. Q.
    New! Relate addition and subtraction sentences - up to two digits
  65. Q.
    New! Complete the addition or subtraction sentence - up to 100
  66. Q.5
    Balance addition and subtraction equations - up to 100
  67. Q.
    New! Which addition or subtraction equation is true? - up to 100
  68. Q.6
    Write addition and subtraction sentences
  69. Q.7
    Inequalities with addition and subtraction - up to 100
  70. R.1
    Addition and subtraction word problems - up to 100
  71. S.
    New! Use number lines to add three-digit numbers
  72. S.
    New! Break apart a three-digit number to add
  73. S.1
    Use compensation to add - up to three digits
  74. S.2
    Use models to add three-digit numbers - without regrouping
  75. S.3
    Use models to add three-digit numbers - with regrouping
  76. S.
    New! Use expanded form to add three-digit numbers - without regrouping
  77. S.
    New! Use expanded form to add three-digit numbers - with regrouping
  78. T.1
    Add multiples of 100
  79. T.2
    Add multiples of 10 or 100
  80. T.3
    Addition with three-digit numbers
  81. T.4
    Add three-digit numbers vertically
  82. T.5
    Addition word problems - up to three digits
  83. T.6
    Complete the addition sentence - up to three digits
  84. T.7
    Write the addition sentence - up to three digits
  85. T.
    New! Addition up to three digits - fill in the missing digits
  86. T.8
    Balance addition equations - up to three digits
  87. W.4
    Solve inequalities using addition and subtraction shortcuts
  88. X.2
    Identify repeated addition for equal groups - sums to 25
  89. X.3
    Write addition sentences for equal groups - sums to 25
  90. X.4
    Identify repeated addition for arrays - sums to 25
  91. X.5
    Write addition sentences for arrays - sums to 25
  92. X.
    New! Solve word problems using repeated addition - sums to 25
  93. Y.1
    Add in any order
  94. Y.2
    Related addition facts
  95. Y.4
    Fact families
  96. Z.4
    Estimate sums
  97. BB.1
    Add money up to $1
  98. BB.2
    Add money up to $1: word problems
  99. BB.5
    Add and subtract money up to $1
  100. BB.6
    Add and subtract money up to $1: word problems

Third-grade skills

  1. D.1
    Estimate sums by rounding: up to 1,000
  2. D.2
    Estimate sums using compatible numbers
  3. D.3
    Estimate sums by rounding: word problems
  4. G.
    New! Use number lines to add three-digit numbers
  5. G.1
    Use compensation to add: up to three digits
  6. G.
    New! Use expanded form to add three-digit numbers
  7. G.2
    Add two numbers up to three digits: without regrouping
  8. G.3
    Add two numbers up to three digits: with regrouping
  9. G.4
    Add two numbers up to three digits
  10. G.5
    Add two numbers up to three digits: word problems
  11. G.6
    Complete the addition sentence: up to three digits
  12. G.7
    Balance addition equations: up to three digits
  13. G.8
    Addition up to three digits: fill in the missing digits
  14. G.9
    Add three numbers up to three digits each
  15. G.10
    Add three numbers up to three digits each: word problems
  16. I.1
    Addition patterns over increasing place values
  17. I.2
    Add two numbers up to four digits
  18. I.3
    Add two numbers up to four digits: word problems
  19. I.4
    Complete the addition sentence: up to four digits
  20. I.5
    Addition up to four digits: fill in the missing digits
  21. I.6
    Add three numbers up to four digits each
  22. I.7
    Add three numbers up to four digits each: word problems
  23. I.8
    Add two numbers up to five digits
  24. K.1
    Relate addition and subtraction sentences
  25. K.
    New! Use number lines to add and subtract three-digit numbers
  26. K.2
    Use compensation to add or subtract: up to three digits
  27. K.3
    Add and subtract three-digit numbers
  28. L.1
    Properties of addition
  29. L.2
    Complete the equation using properties of addition
  30. L.3
    Add using properties
  31. N.1
    Identify repeated addition for equal groups - sums to 25
  32. N.2
    Write addition sentences for equal groups - sums to 25
  33. N.12
    Relate addition and multiplication
  34. VV.9
    Add and subtract money amounts
  35. VV.10
    Add money amounts - word problems

Fourth-grade skills

  1. D.1
    Estimate sums
  2. D.2
    Estimate sums: word problems
  3. D.3
    Add two multi-digit numbers
  4. D.4
    Add two multi-digit numbers: word problems
  5. D.5
    Properties of addition
  6. D.6
    Add 3 or more numbers up to millions
  7. D.7
    Addition: fill in the missing digits
  8. D.8
    Choose numbers with a particular sum
  9. M.1
    Add and subtract numbers ending in zeros
  10. M.4
    Comparison word problems with addition and subtraction
  11. S.1
    Decompose fractions into unit fractions using models
  12. S.5
    Add fractions with like denominators using area models
  13. S.6
    Add fractions with like denominators using strip models
  14. S.7
    Add fractions with like denominators using number lines
  15. T.1
    Add fractions with like denominators
  16. T.3
    Add and subtract fractions with like denominators
  17. T.4
    Add and subtract fractions with like denominators: word problems
  18. T.6
    Add 3 or more fractions with like denominators
  19. T.7
    Compare sums and differences of fractions with like denominators
  20. T.
    New! Add and subtract mixed numbers with like denominators - without regrouping
  21. T.8
    Add mixed numbers with like denominators
  22. T.10
    Add and subtract mixed numbers with like denominators
  23. U.1
    Add fractions: denominators 10 and 100
  24. U.2
    Identify fraction expressions with a particular sum: denominators of 10 and 100
  25. U.3
    Add fractions with unlike denominators using models
  26. U.4
    Add fractions with unlike denominators
  27. U.7
    Add and subtract fractions with unlike denominators: word problems
  28. Z.2
    Add decimals using blocks
  29. Z.3
    Add decimal numbers
  30. Z.6
    Add and subtract decimals
  31. Z.7
    Add and subtract decimals: word problems
  32. Z.8
    Choose decimals with a particular sum or difference
  33. Z.9
    Add 3 or more decimals
  34. Z.10
    Add 3 or more decimals: word problems
  35. Z.11
    Complete the addition or subtraction sentence
  36. Z.12
    Inequalities with addition and subtraction
  37. AA.4
    Add and subtract money amounts
  38. AA.6
    Price lists with addition and subtraction
  39. AA.8
    Multi-step word problems with money: addition and subtraction only
  40. EE.8
    Add and subtract mixed metric units

Fifth-grade skills

  1. B.1
    Estimate sums and differences of whole numbers
  2. B.2
    Estimate sums and differences: word problems
  3. B.3
    Add and subtract whole numbers up to billions
  4. B.4
    Add and subtract whole numbers: word problems
  5. B.5
    Complete addition and subtraction sentences
  6. B.6
    Properties of addition
  7. B.7
    Add using properties
  8. L.2
    Add fractions with unlike denominators using models
  9. L.3
    Add fractions with unlike denominators
  10. L.
    New! Add and subtract fractions with unlike denominators
  11. L.6
    Add and subtract fractions with unlike denominators: word problems
  12. L.7
    Add 3 or more fractions with unlike denominators
  13. L.8
    Add 3 or more fractions: word problems
  14. L.9
    Complete addition and subtraction sentences with fractions
  15. L.10
    Compare sums and differences of fractions
  16. M.1
    Estimate sums and differences of mixed numbers
  17. M.2
    Add and subtract mixed numbers with unlike denominators: without regrouping
  18. M.3
    Add mixed numbers with unlike denominators
  19. M.5
    Add and subtract mixed numbers
  20. M.6
    Add and subtract mixed numbers: word problems
  21. M.8
    Complete addition and subtraction sentences with mixed numbers
  22. M.9
    Compare sums and differences of mixed numbers
  23. AA.1
    Add decimal numbers using blocks
  24. AA.2
    Add decimal numbers
  25. AA.5
    Add and subtract decimal numbers
  26. AA.6
    Add and subtract decimals: word problems
  27. AA.7
    Choose decimals with a particular sum or difference
  28. AA.8
    Complete the decimal addition or subtraction sentence
  29. AA.9
    Compare sums and differences of decimals
  30. AA.11
    Estimate sums and differences of decimals using rounding
  31. HH.1
    Add and subtract money amounts
  32. HH.2
    Add and subtract money: word problems
  33. HH.3
    Add and subtract money: multi-step word problems
  34. HH.6
    Multiply money amounts: multi-step word problems
  35. JJ.8
    Add and subtract metric mixed units

Sixth-grade skills

  1. A.1
    Add and subtract whole numbers
  2. A.2
    Add and subtract whole numbers: word problems
  3. H.1
    Add and subtract decimal numbers
  4. H.2
    Add and subtract decimals: word problems
  5. H.3
    Add and subtract money amounts: word problems
  6. H.4
    Complete the decimal addition or subtraction sentence
  7. H.5
    Estimate sums and differences of decimals
  8. H.6
    Maps with decimal distances
  9. K.1
    Add and subtract fractions with like denominators
  10. K.2
    Add and subtract fractions with like denominators: word problems
  11. K.3
    Add and subtract fractions with unlike denominators
  12. K.4
    Add and subtract fractions with unlike denominators: word problems
  13. K.5
    Inequalities with addition and subtraction of like and unlike fractions
  14. K.6
    Add and subtract mixed numbers
  15. K.7
    Add and subtract mixed numbers: word problems
  16. K.8
    Estimate sums and differences of mixed numbers
  17. K.9
    Maps with fractional distances
  18. P.1
    Add integers using counters
  19. P.2
    Add integers using number lines
  20. P.3
    Add integers
  21. P.7
    Add and subtract integers: find the sign
  22. P.9
    Add and subtract integers: input/output tables
  23. P.10
    Add three or more integers
  24. Z.2
    Properties of addition

Seventh-grade skills

  1. B.1
    Add integers using counters
  2. B.2
    Add integers using number lines
  3. B.3
    Integer addition rules
  4. B.4
    Add integers
  5. B.5
    Add three or more integers
  6. B.10
    Integer addition and subtraction rules
  7. B.11
    Add and subtract integers using counters
  8. B.12
    Add and subtract integers
  9. B.13
    Complete addition and subtraction equations with integers
  10. B.14
    Add and subtract integers: word problems
  11. B.24
    Add, subtract, multiply, and divide integers
  12. D.1
    Add and subtract decimals
  13. D.2
    Add and subtract decimals: word problems
  14. D.11
    Maps with decimal distances
  15. G.1
    Add and subtract fractions
  16. G.2
    Add and subtract fractions: word problems
  17. G.3
    Add and subtract mixed numbers
  18. G.4
    Add and subtract mixed numbers: word problems
  19. G.5
    Inequalities with addition and subtraction of fractions and mixed numbers
  20. G.6
    Estimate sums and differences of mixed numbers
  21. G.17
    Maps with fractional distances
  22. I.1
    Add and subtract positive and negative decimals
  23. I.2
    Add and subtract positive and negative fractions
  24. I.3
    Add and subtract rational numbers
  25. I.5
    Apply addition and subtraction rules
  26. S.1
    Properties of addition and multiplication

Eighth-grade skills

  1. A.2
    Integer addition and subtraction rules
  2. A.3
    Add and subtract integers using counters
  3. A.4
    Add and subtract integers
  4. A.5
    Add and subtract three or more integers
  5. A.6
    Add and subtract integers: word problems
  6. B.6
    Add and subtract rational numbers
  7. B.7
    Add and subtract rational numbers: word problems
  8. B.8
    Apply addition and subtraction rules
  9. B.12
    Apply addition, subtraction, multiplication, and division rules
  10. L.1
    Properties of addition and multiplication

Algebra 1 skills

  1. A.4
    Add and subtract rational numbers
  2. B.5
    Properties of addition and multiplication
  3. EE.5
    Add and subtract radical expressions
  4. GG.4
    Add and subtract rational expressions
  5. GG.5
    Simplify mixed rational expressions
  6. LL.3
    Add and subtract matrices

Algebra 2 skills

  1. O.6
    Add and subtract rational expressions