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1st grade · Math · Unit 3 of 14

Adding

Put groups together

What your child practices

Adding to 20 with pictures, ten frames, number lines and short stories, using strategies like counting on, doubles and making 10.

Arizona Academic Standards learning standard: 1.OA.A.1; 1.OA.C.6 · solving addition problems and adding within 20

How we explain it

Children can open this short lesson before they practice.

  1. Adding puts groups together.
  2. Start with the bigger number.
  3. Count on the smaller number.

Example: 5 + 3 = ? Start at 5. Count on 3: 6, 7, 8. Answer: 8

Adding in Arizona

In the Arizona Academic Standards, this is unit 3 of 14 in 1st grade Math, after Make 10 and before Take Away.

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

    Start at 11. Hop 2 more. Where do you land?

    0369121518?
    • 3
    • 14
    • 13

  2. Question 2

    What is 5 + 5?

    5 + 5 = ?

    • 12
    • 10
    • 7

  3. Question 3

    What is 9 + 6?

    9 + 6 = ?

    answer box

  4. Question 4

    Zoe has 5 🐚 and finds 4 more. How many now?

    🐚5 + 4
    • 13
    • 9
    • 6

  5. Question 5

    What is 8 + 7?

    • 15
    • 19
    • 12

  6. Question 6

    What is 8 + 2?

    8 + 2 = ?

    • 10
    • 9
    • 20

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