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2nd grade · Math · Unit 3 of 16

Skip Counting

Count by 2s, 5s and 10s, forward and back.

What your child practices

Skip counting by 2s, 5s and 10s forward and backward from 0 to 100, using a hundred chart or number line.

Oregon State Standards learning standard: 2.NBT.A.2 · skip-counting by 5s, 10s and 100s

How we explain it

Children can open this short lesson before they practice.

  1. Find the jump between the numbers.
  2. Count forward by adding it. Count back by taking it away.
  3. Check the pattern with the next number.

Example: Count back by 5s: 30, 25, 20, ? Each step takes away 5. 20 − 5 = 15. Answer: 15

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: 70, 80, 90, __

    • 91
    • 100
    • 110

  2. Question 2

    Which number is missing? 2, 4, __, 8, 10

    • 7
    • 6
    • 5

  3. Question 3

    Count back by 2s: 20, 18, 16, __

    • 12
    • 15
    • 14

  4. Question 4

    Count by 2s: 20, 22, 24, __

    • 26
    • 25
    • 28

  5. Question 5

    Count by 5s: 5, 10, 15, __

    • 16
    • 20
    • 25

  6. Question 6

    Count back by 5s from 50. What are the next two numbers?

    • 45, 40
    • 49, 48
    • 40, 30

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