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

Kindergarten skills

  1. E.3
    Make teen numbers: words
  2. E.4
    Take apart teen numbers: words
  3. E.5
    Make teen numbers: addition sentences
  4. E.6
    Take apart teen numbers: addition sentences
  5. E.7
    Make and take apart teen numbers: addition sentences
  6. J.1
    Put together numbers using cubes - sums up to 5
  7. J.2
    Build cube trains to add up to 5 - words
  8. J.3
    Take apart numbers using cubes - sums up to 5
  9. J.4
    Add with cubes - sums up to 5
  10. J.5
    Build cube trains to add up to 5 - addition sentences
  11. J.6
    Add with pictures - sums up to 5
  12. J.7
    Addition sentences up to 5 - which model matches?
  13. J.8
    Addition sentences up to 5 - what does the model show?
  14. J.
    New! Write addition sentences for pictures - sums up to 5
  15. J.9
    Take apart numbers up to 5 - addition sentences
  16. J.10
    Add two numbers - sums up to 5
  17. J.11
    Make a number using addition - sums up to 5
  18. J.12
    Complete the addition sentence - sums up to 5
  19. J.13
    Addition word problems with pictures - sums up to 5
  20. J.
    New! Build cube trains to solve addition word problems - sums up to 5
  21. J.14
    Addition word problems - sums up to 5
  22. K.1
    Put together numbers using cubes - sums up to 10
  23. K.2
    Build cube trains to add up to 10 - words
  24. K.3
    Take apart numbers using cubes - sums up to 10
  25. K.4
    Take apart 10 using cubes
  26. K.5
    Decompose a number up to 10
  27. K.6
    Add with cubes - sums up to 10
  28. K.7
    Build cube trains to add up to 10 - addition sentences
  29. K.8
    Add with pictures - sums up to 10
  30. K.9
    Addition sentences up to 10 - which model matches?
  31. K.10
    Addition sentences up to 10 - what does the model show?
  32. K.
    New! Write addition sentences for pictures - sums up to 10
  33. K.11
    Take apart numbers up to 10 - addition sentences
  34. K.12
    Take apart 10 - addition sentences
  35. K.13
    Add two numbers - sums up to 10
  36. K.14
    Make a number using addition - sums up to 10
  37. K.15
    Complete the addition sentence - make 10
  38. K.16
    Complete the addition sentence - sums up to 10
  39. K.17
    Turn words into an addition sentence - sums up to 10
  40. K.18
    Addition word problems with pictures - sums up to 10
  41. K.
    New! Build cube trains to solve addition word problems - sums up to 10
  42. K.19
    Addition word problems - sums up to 10
  43. N.1
    Add or subtract - numbers up to 5
  44. N.2
    Add or subtract - numbers up to 10
  45. N.3
    Addition and subtraction - ways to make a number
  46. N.4
    Addition and subtraction word problems with pictures
  47. N.5
    Addition and subtraction word problems

First-grade skills

  1. B.1
    Add with cubes - sums up to 10
  2. B.2
    Add with pictures - sums up to 10
  3. B.3
    Addition sentences up to 10: which model matches?
  4. B.4
    Addition sentences up to 10: what does the model show?
  5. B.
    New! Write addition sentences for pictures - sums up to 10
  6. B.5
    Addition sentences using number lines - sums up to 10
  7. B.6
    Turn words into an addition sentence - sums up to 10
  8. C.1
    Adding 1
  9. C.2
    Adding 2
  10. C.3
    Adding 3
  11. C.4
    Adding 4
  12. C.5
    Adding 5
  13. C.6
    Adding 6
  14. C.7
    Adding 7
  15. C.8
    Adding 8
  16. C.9
    Adding 9
  17. C.
    New! Adding 10
  18. C.10
    Adding 0
  19. D.1
    Addition facts - sums up to 10
  20. D.2
    Make a number using addition - sums up to 10
  21. D.3
    Complete the addition sentence - sums up to 10
  22. D.4
    Ways to make a number - addition sentences up to 10
  23. D.5
    Addition word problems with pictures - sums up to 10
  24. D.
    New! Build cube trains to solve addition word problems - sums up to 10
  25. D.6
    Addition word problems - sums up to 10
  26. D.7
    Addition sentences for word problems - sums up to 10
  27. D.8
    Addition sentences using number lines - sums up to 20
  28. D.
    New! Add in any order
  29. D.9
    Addition facts - sums up to 20
  30. D.10
    Make a number using addition - sums up to 20
  31. D.11
    Complete the addition sentence - sums up to 20
  32. D.12
    Addition word problems - sums up to 20
  33. D.13
    Addition sentences for word problems - sums up to 20
  34. D.14
    Related addition facts
  35. D.15
    Addition sentences: true or false?
  36. D.16
    Addition sentences: which is true?
  37. D.17
    Use models to add a two-digit and a one-digit number - without regrouping
  38. D.18
    Add a one-digit number to a two-digit number - without regrouping
  39. D.19
    Regroup tens and ones - ways to make a number
  40. D.20
    Regroup tens and ones
  41. D.21
    Use models to add a two-digit and a one-digit number - with regrouping
  42. D.22
    Add a one-digit number to a two-digit number - with regrouping
  43. D.23
    Addition word problems - one-digit plus two-digit numbers
  44. D.24
    Addition sentences for word problems - one-digit plus two-digit numbers
  45. D.25
    Use models to add two-digit numbers - without regrouping
  46. D.26
    Add two-digit numbers without regrouping - sums to 100
  47. D.27
    Use models to add two-digit numbers - with regrouping
  48. D.28
    Add two-digit numbers with regrouping - sums to 100
  49. E.
    New! Add by counting on - sums up to 10
  50. E.
    New! Add by counting on - sums up to 20
  51. E.1
    Add doubles - with models
  52. E.2
    Add doubles
  53. E.3
    Add doubles - complete the sentence
  54. E.4
    Add using doubles plus one
  55. E.5
    Add using doubles minus one
  56. E.6
    Add three numbers - use doubles
  57. E.7
    Make ten to add - with models
  58. E.8
    Complete the addition sentence - make ten
  59. E.9
    Make ten to add
  60. E.10
    Add three numbers - make ten
  61. E.11
    Use models to add a multiple of ten and a one-digit number
  62. E.12
    Add a multiple of ten and a one-digit number
  63. E.13
    Add two multiples of ten
  64. E.14
    Use models to add a multiple of ten and a two-digit number
  65. E.15
    Add a multiple of ten and a two-digit number
  66. E.16
    Add three numbers
  67. E.17
    Add three numbers - word problems
  68. I.1
    Relate addition and subtraction sentences
  69. J.1
    Addition and subtraction - ways to make a number
  70. J.2
    Which sign makes the number sentence true?
  71. J.3
    Fact families
  72. J.4
    Addition and subtraction facts - up to 10
  73. J.5
    Addition and subtraction facts - up to 20
  74. J.6
    Addition and subtraction sentences: which is true?
  75. J.7
    Ten more or less
  76. J.8
    Add and subtract tens
  77. K.1
    Word problems with change unknown - up to 10
  78. K.2
    Word problems with start unknown - up to 10
  79. K.3
    Word problems with one addend unknown - up to 10
  80. K.5
    Word problems involving addition and subtraction - up to 10
  81. K.6
    Word problems involving addition and subtraction - up to 20
  82. K.7
    Addition and subtraction sentences for word problems - up to 20

Second-grade skills

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

Third-grade skills

  1. A.12
    Comparing: with addition and subtraction
  2. A.13
    Multi-step inequalities
  3. C.1
    Add two numbers up to three digits
  4. C.2
    Addition input/output tables: up to three digits
  5. C.3
    Add two numbers up to three digits: word problems
  6. C.4
    Complete the addition sentence: up to three digits
  7. C.5
    Balance addition equations: up to three digits
  8. C.6
    Use compensation to add: up to three digits
  9. C.7
    Add three numbers up to three digits each
  10. C.8
    Add three numbers up to three digits each: word problems
  11. C.9
    Addition up to three digits: fill in the missing digits
  12. C.10
    Add two numbers up to four digits
  13. C.11
    Add two numbers up to four digits: word problems
  14. C.12
    Complete the addition sentence: up to four digits
  15. C.13
    Add three numbers up to four digits each
  16. C.14
    Add three numbers up to four digits each: word problems
  17. C.15
    Addition up to four digits: fill in the missing digits
  18. C.16
    Addition patterns over increasing place values
  19. C.17
    Add two numbers up to six digits
  20. N.3
    Properties of addition
  21. N.4
    Complete the equation using properties of addition
  22. N.5
    Add using properties
  23. N.10
    Relate addition and multiplication
  24. P.7
    Estimate sums by rounding: up to 1,000
  25. P.8
    Estimate sums by rounding: up to 1,000,000
  26. P.9
    Estimate sums by rounding: word problems
  27. P.10
    Estimate sums using compatible numbers
  28. S.9
    Add and subtract money amounts
  29. S.10
    Add money amounts - word problems
  30. Y.6
    Add fractions with like denominators using number lines

Fourth-grade skills

  1. B.1
    Add two numbers up to five digits
  2. B.2
    Add two numbers up to five digits: word problems
  3. B.3
    Add two numbers up to seven digits
  4. B.4
    Add two numbers up to seven digits: word problems
  5. B.5
    Addition: fill in the missing digits
  6. B.6
    Properties of addition
  7. B.7
    Add 3 or more numbers up to millions
  8. B.8
    Addition patterns over increasing place values
  9. B.9
    Choose numbers with a particular sum
  10. B.10
    Estimate sums
  11. B.11
    Estimate sums: word problems
  12. F.2
    Comparison word problems with addition and subtraction
  13. F.16
    Mentally add and subtract numbers ending in zeroes
  14. L.5
    Add and subtract money amounts
  15. L.8
    Price lists with addition and subtraction
  16. L.9
    Multi-step word problems with money: addition and subtraction only
  17. M.20
    Add and subtract mixed metric units
  18. P.1
    Decompose fractions into unit fractions using models
  19. P.5
    Add fractions with like denominators using area models
  20. P.6
    Add fractions with like denominators using strip models
  21. P.7
    Add fractions with like denominators using number lines
  22. P.8
    Add fractions with like denominators
  23. P.14
    Add and subtract fractions with like denominators
  24. P.15
    Compare sums and differences of fractions with like denominators
  25. P.16
    Add and subtract fractions with like denominators: word problems
  26. P.18
    Add 3 or more fractions with like denominators
  27. P.
    New! Add mixed numbers with like denominators
  28. P.19
    Add and subtract mixed numbers with like denominators
  29. Q.1
    Add fractions: denominators 10 and 100
  30. Q.2
    Identify fraction expressions with a particular sum: denominators of 10 and 100
  31. Q.3
    Add fractions with unlike denominators using models
  32. Q.4
    Add fractions with unlike denominators
  33. Q.7
    Add and subtract fractions with unlike denominators: word problems
  34. Q.8
    Add 3 or more fractions with unlike denominators
  35. Q.9
    Add 3 or more fractions with like and unlike denominators: word problems
  36. T.1
    Add decimals using blocks
  37. T.2
    Add decimal numbers
  38. T.4
    Add and subtract decimals
  39. T.5
    Add and subtract decimals: word problems
  40. T.6
    Choose decimals with a particular sum or difference
  41. T.7
    Add 3 or more decimals
  42. T.8
    Add 3 or more decimals: word problems
  43. T.9
    Complete the addition or subtraction sentence
  44. T.10
    Inequalities with addition and subtraction
  45. T.11
    Estimate sums and differences of decimals

Fifth-grade skills

  1. B.1
    Add and subtract whole numbers up to billions
  2. B.2
    Add and subtract whole numbers: word problems
  3. B.3
    Complete addition and subtraction sentences
  4. B.4
    Fill in the missing digits
  5. B.5
    Choose numbers with a particular sum or difference
  6. B.6
    Properties of addition
  7. B.7
    Add using properties
  8. B.8
    Estimate sums and differences of whole numbers
  9. B.9
    Estimate sums and differences: word problems
  10. H.1
    Add decimal numbers using blocks
  11. H.2
    Add decimal numbers
  12. H.4
    Add and subtract decimal numbers
  13. H.5
    Add and subtract decimals: word problems
  14. H.6
    Choose decimals with a particular sum or difference
  15. H.7
    Complete the decimal addition or subtraction sentence
  16. H.8
    Inequalities with decimal addition and subtraction
  17. H.9
    Estimate sums and differences of decimals using rounding
  18. L.2
    Add and subtract fractions with like denominators using number lines
  19. L.3
    Add and subtract fractions with like denominators
  20. L.4
    Add and subtract fractions with like denominators: word problems
  21. L.5
    Add and subtract mixed numbers with like denominators
  22. L.6
    Add fractions with unlike denominators using models
  23. L.7
    Add up to 4 fractions with denominators of 10 and 100
  24. L.8
    Add fractions with unlike denominators
  25. L.12
    Add and subtract fractions with unlike denominators: word problems
  26. L.13
    Add 3 or more fractions with unlike denominators
  27. L.14
    Add 3 or more fractions: word problems
  28. L.16
    Complete addition and subtraction sentences with fractions
  29. L.17
    Inequalities with addition and subtraction of fractions
  30. L.18
    Estimate sums and differences of mixed numbers
  31. L.19
    Add mixed numbers with unlike denominators
  32. L.21
    Add and subtract mixed numbers: word problems
  33. L.23
    Complete addition and subtraction sentences with mixed numbers
  34. L.24
    Inequalities with addition and subtraction of mixed numbers
  35. R.1
    Add and subtract money amounts
  36. R.2
    Add and subtract money: word problems
  37. R.3
    Add and subtract money: multi-step word problems
  38. R.6
    Multiply money amounts: multi-step word problems
  39. Y.20
    Add and subtract metric mixed units

Sixth-grade skills

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

Seventh-grade skills

  1. C.1
    Add integers using counters
  2. C.2
    Add integers using number lines
  3. C.3
    Integer addition rules
  4. C.4
    Add integers
  5. C.5
    Add three or more integers
  6. C.10
    Integer addition and subtraction rules
  7. C.11
    Add and subtract integers using counters
  8. C.12
    Add and subtract integers
  9. C.13
    Complete addition and subtraction equations with integers
  10. C.14
    Add and subtract integers: word problems
  11. C.24
    Add, subtract, multiply, and divide integers
  12. E.1
    Add and subtract decimals
  13. E.2
    Add and subtract decimals: word problems
  14. E.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. H.10
    Add and subtract positive and negative decimals
  23. H.11
    Add and subtract positive and negative fractions
  24. H.12
    Add and subtract rational numbers
  25. H.14
    Apply addition and subtraction rules
  26. R.10
    Properties of addition and multiplication

Eighth-grade skills

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

Algebra 1 skills

  1. B.4
    Add and subtract rational numbers
  2. H.1
    Properties of addition and multiplication
  3. M.3
    Add and subtract matrices
  4. FF.5
    Add and subtract radical expressions
  5. HH.6
    Add and subtract rational expressions
  6. HH.7
    Simplify mixed rational expressions

Algebra 2 skills

  1. O.6
    Add and subtract rational expressions