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1st grade · Math · Unit 4 of 14

Take Away

How many are left?

What your child practices

Subtracting within 20 by counting back and thinking addition, and solving short take-away and compare stories.

Alaska content standards learning standard: 1.OA.1; 1.OA.4; 1.OA.6 · solving subtraction problems and subtracting as an unknown-addend problem

How we explain it

Children can open this short lesson before they practice.

  1. Taking away means some go away.
  2. Start with the whole group.
  3. Count back the number you take away.

Example: 9 − 4 = ? Start at 9. Count back 4: 8, 7, 6, 5. Answer: 5

Take Away in Alaska

In the Alaska content standards, this is unit 4 of 14 in 1st grade Math, after Adding and before Equal or Not.

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: Alaska Department of Education and Early Development

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 is 13 − 5?

    13 − 5 = ?

    • 6
    • 8
    • 11

  2. Question 2

    9 + 3 = 12. So what is 12 − 3?

    12 − 3 = ?

    • 6
    • 9
    • 10

  3. Question 3

    Start at 11. Hop back 5. Where do you land?

    039121518?
    • 0
    • 6
    • 16

  4. Question 4

    What is 15 − 9?

    15 − 9 = ?

    answer box

  5. Question 5

    There are 11 🐦 in a tree. 3 fly away. How many are left?

    🐦11 − 3
    • 10
    • 8
    • 9

  6. Question 6

    What is 18 − 4?

    18 − 4 = ?

    • 16
    • 14
    • 19

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