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2nd grade · Math · Unit 9 of 18

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.

New York State Learning Standards learning standard: NY-2.NBT.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

Skip Counting in New York

In the New York State Learning Standards, this is unit 9 of 18 in 2nd grade Math, after Fractions of a Whole and before Even, Odd and Ordinals.

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: New York State Education Department (NYSED)

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 5s: 25, 30, 35, __

    • 36
    • 40
    • 45

  2. Question 2

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

    • 6
    • 7
    • 5

  3. Question 3

    Which number is missing? 10, 20, __, 40, 50

    • 35
    • 25
    • 30

  4. Question 4

    Which number is missing? 5, __, 15, 20, 25

    • 10
    • 11
    • 12

  5. Question 5

    Count by 10s: 10, 20, 30, __

    • 40
    • 31
    • 50

  6. Question 6

    Count by 10s: 7 dimes make how many cents?

    • 17
    • 7
    • 70

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