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1st grade · Math · Unit 10 of 14

Count It Up

Count on, count back and skip count!

What your child practices

Counting forward within 100, back from 20, by 2s to 20, and by 5s and 10s to 100, plus seeing small amounts at a glance (subitizing).

Arizona Academic Standards learning standard: 1.NBT.A.1; 1.OA.C.5 · counting on and back from any number and relating counting to adding and subtracting

How we explain it

Children can open this short lesson before they practice.

  1. Skip count by 2s, 5s or 10s.
  2. Find how much the number grows each time.
  3. Keep adding that much to find the next number.

Example: Count by 5s: 15, 20, 25, 30, ? Each step adds 5. 30 + 5 = 35. Answer: 35

Count It Up in Arizona

In the Arizona Academic Standards, this is unit 10 of 14 in 1st grade Math, after Numbers to 100 and before One Half.

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

    Count by 10s. What number is missing?

    0, 10, 20, 30, 40, , 60, 70

    • 50
    • 44
    • 52

  2. Question 2

    6 bags with 10 each. Count by 10s. How many in all?

    • 70
    • 60
    • 62

  3. Question 3

    Take a quick look. How many ⚽?

    • 5
    • 8
    • 1

  4. Question 4

    Count back. What number comes next?

    8, 7, 6,

    • 3
    • 11
    • 5

  5. Question 5

    Count on. What number comes next?

    58, 59, 60,

    • 59
    • 61
    • 66

  6. Question 6

    Take a quick look. How many 🐥?

    • 5
    • 3
    • 9

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