Grade 1 math skills

IXL has hundreds of grade 1 math skills to learn and review! As you work through a skill, questions will adapt to match your level. Keep answering questions to reach mastery!

E. Addition strategies up to 10

  1. 1
    Add in any order
  2. 2
    Add by counting on - sums up to 10
  3. 3
    Complete the addition sentence to make ten - with models
  4. 4
    Complete the addition sentence to make ten

I. Subtraction strategies up to 10

  1. 1
    Subtract by counting back - up to 10
  2. 2
    Subtract by counting on - up to 10
  3. 3
    Relate addition and subtraction sentences - up to 10
  4. 4
    Use addition to subtract - up to 10

L. Addition and subtraction up to 10

  1. 1
    Related facts with models - numbers up to 10
  2. 2
    Fact families - up to 10
  3. 3
    Addition and subtraction facts - up to 10
  4. 4
    Sort addition and subtraction facts - up to 10

M. Addition and subtraction word problems up to 10

  1. 1
    Word problems with change unknown - up to 10
  2. 2
    Word problems with start unknown - up to 10
  3. 3
    Word problems with one addend unknown - up to 10
  4. 4
    Word problems involving addition and subtraction - up to 10

P. Addition word problems up to 20

  1. 1
    Addition word problems - sums up to 20
  2. 2
    Addition sentences for word problems - sums up to 20
  3. 3
    Add three numbers - word problems

S. Subtraction word problems up to 20

  1. 1
    Subtraction word problems - up to 20
  2. 2
    Subtraction sentences for word problems - up to 20

T. Addition and subtraction up to 20

  1. 1
    Addition and subtraction facts - up to 20
  2. 2
    Addition and subtraction - ways to make a number
  3. 3
    Addition and subtraction terms

V. True or false equations

  1. 1
    Which sign makes the number sentence true?
  2. 2
    Addition and subtraction sentences to 10: which is true?
  3. 3
    Addition sentences: true or false?
  4. 4
    Subtraction sentences: true or false?

Y. Addition and subtraction: multiples of ten

  1. 1
    Ten more or less
  2. 2
    Add multiples of ten
  3. 3
    Subtract multiples of ten

BB. Addition and subtraction: two digits

  1. 1
    Add and subtract - up to 40
  2. 2
    Word problems involving addition and subtraction - up to 40
  3. 3
    Add or subtract a multiple of ten

DD. Area

  1. 1
    Tile a rectangle with squares
  2. 2
    Area
  3. 3
    Select figures with a given area
  4. 4
    Create figures with a given area

FF. Days, months and seasons

  1. 1
    Days of the week
  2. 2
    Months of the year
  3. 3
    Seasons of the year
  4. 4
    Read a calendar

LL. Spatial sense

  1. 1
    In front of and behind
  2. 2
    Above and below
  3. 3
    Beside and next to
  4. 4
    Left, middle and right
  5. 5
    Top, middle and bottom
  6. 6
    Location in a grid

NN. Venn diagrams

  1. 1
    Sort shapes into a Venn diagram
  2. 2
    Count shapes in a Venn diagram

OO. Probability and statistics

  1. 1
    More, less and equally likely
  2. 2
    Certain, probable, unlikely and impossible