GradeMap

Grade 1 · Math · Unit 1 of 15

Numbers to 50

Count, build and compare

What your child practises

Tens and ones, counting by 2s, 5s and 10s, and comparing and ordering numbers up to 50.

Ontario Curriculum expectation: B1.1–B1.5, C1.4 · reading, composing, comparing and counting whole numbers up to 50

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    What number is shown?

    • 27
    • 26
    • 24
    Show answer

    26

    Hint: Count the tens first, then the ones.

  2. Question 2

    Tap the numbers from smallest to biggest.

    • 44
    • 37
    • 31
    • 10
    Show answer

    10 → 31 → 37 → 44

    Hint: Start with the smallest number, 10.

  3. Question 3

    What number is shown?

    • 20
    • 18
    • 8
    Show answer

    18

    Hint: Count the tens first, then the ones.

  4. Question 4

    Which number is the least?

    • 44
    • 23
    • 12
    Show answer

    12

    Hint: Compare the tens first. If they match, compare the ones.

  5. Question 5

    Count by 5s: 5, 10, 15, 20, ?

    • 19
    • 31
    • 25
    Show answer

    25

    Hint: Each number is 5 more than the one before it.

  6. Question 6

    Build the number 40.

    Build it with tens rods and ones cubes.

    Show answer

    40

    Hint: 40 is 4 tens and 0 ones.

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