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Kindergarten · Math · Unit 6 of 10

Numbers to 20

Count, read and compare numbers

What your child practices

Counting to 20 forward and back from any number, recognizing small groups at a glance, and comparing two numbers.

Arizona Academic Standards learning standard: K.CC.A.2; K.CC.A.3; K.CC.B.5 · counting forward from a given number and representing up to 20 objects with a written number

How we explain it

Children can open this short lesson before they practice.

  1. Count each thing once. Do not skip any.
  2. To count on, say the next number: 14, then 15.
  3. Counting back goes the other way: 15, 14, 13.

Example: What is 1 more than 14? Count on from 14. The next number is 15. Answer: 15

Numbers to 20 in Arizona

In the Arizona Academic Standards, this is unit 6 of 10 in Kindergarten Math, after Shapes & Sizes and before See It Fast.

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 backward. What comes before 3?

    0134567?
    • 2
    • 3
    • 5

  2. Question 2

    How many 🍓?

    • 9
    • 15
    • 7

  3. Question 3

    Count forward. What comes after 12?

    89101112141516?
    • 14
    • 7
    • 13

  4. Question 4

    How many dots are there?

    • 18
    • 9
    • 13

  5. Question 5

    Which number is more?

    3 13

    • 3
    • 13

  6. Question 6

    How many dots? Try not to count them one by one.

    • 6
    • 4
    • 3

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