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Kindergarten · Math · Unit 7 of 10

See It Fast

How many? Look and know

What your child practices

Subitizing means knowing how many are in a small group without counting. Practice with dice, dominoes and fingers: show a number and ask how many.

Arizona Academic Standards learning standard: K.CC.B.4; K.CC.B.5 · connecting numbers to quantities and answering how-many questions about small groups

How we explain it

Children can open this short lesson before they practice.

  1. Look at the group. Do not count one by one.
  2. Small groups are easy to see: 1, 2, 3.
  3. Split a group in two parts, then put them together.

Example: You see 2 dots and 1 dot. How many in all? Two and one together. That makes 3. Answer: 3

See It Fast in Arizona

In the Arizona Academic Standards, this is unit 7 of 10 in Kindergarten Math, after Numbers to 20 and before Build with Blocks.

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

    How many? Try not to count one by one.

    • 3
    • 5
    • 6

  2. Question 2

    Which group has 4? Look fast.

    • 🔵🔵🔵🔵
    • 🔵🔵
    • 🔵

  3. Question 3

    1 and 3 together. How many?

    🟡 🟡🟡🟡

    • 4
    • 3
    • 6

  4. Question 4

    How many? Try not to count one by one.

    • 3
    • 2
    • 6

  5. Question 5

    How many? Try not to count one by one.

    • 4
    • 2
    • 5

  6. Question 6

    Which number matches 🔴🔴?

    • 2
    • 6
    • 5

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