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1st grade · Math · Unit 2 of 14

Make 10

Two numbers that make 10

What your child practices

Finding pairs that make 10 (like 6 + 4) with ten frames, fingers and stories. Making 10 is a key strategy for adding.

Arizona Academic Standards learning standard: 1.OA.B.3; 1.OA.C.6 · using properties of operations and making ten to add within 20

How we explain it

Children can open this short lesson before they practice.

  1. Some pairs make 10: 6 and 4, 7 and 3, 8 and 2.
  2. Start at one number and count up to 10.
  3. The steps you counted are the other number.

Example: 7 + ? = 10 Start at 7. Count up: 8, 9, 10. That is 3 steps. Answer: 3

Make 10 in Arizona

In the Arizona Academic Standards, this is unit 2 of 14 in 1st grade Math, after Numbers to 20 and before Adding.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Arizona Department of Education

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 missing?

    10 = 3 +

    • 7
    • 9
    • 1

  2. Question 2

    What number makes 10?

    1 + = 10

    • 5
    • 8
    • 9

  3. Question 3

    5 fingers are up. How many fingers are down?

    🙌10 fingers
    • 9
    • 10
    • 5

  4. Question 4

    Noah has 4 ⭐. How many more to make 10?

    ⭐⭐⭐⭐
    • 10
    • 6
    • 7

  5. Question 5

    1 + 9 = 10. So what is 9 + 1?

    9 + 1 = ?

    • 10
    • 11
    • 8

  6. Question 6

    Which two numbers make 10?

    🔟
    • 1 + 9
    • 3 + 6
    • 8 + 3

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