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4th grade · Math · Unit 3 of 15

Multiply & Divide

Bigger numbers by one digit

What your child practices

Multiplying and dividing 2- and 3-digit numbers by 1-digit numbers by splitting them by place value, plus remainders, estimating and word problems.

Arizona Academic Standards learning standard: 4.NBT.B.5; 4.NBT.B.6 · multiplying by one digit and dividing with remainders

How we explain it

Children can open this short lesson before they practice.

  1. Break the bigger number into tens and ones.
  2. Multiply each part.
  3. Add the parts back together.

Example: 3 × 24 = ? 24 is 20 + 4. 3 × 20 = 60 and 3 × 4 = 12. 60 + 12 = 72. Answer: 72

Multiply & Divide in Arizona

In the Arizona Academic Standards, this is unit 3 of 15 in 4th grade Math, after Add & Subtract and before Fractions.

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

    A farmer plants 39 sunflowers in each field. How many sunflowers are in 3 fields?

    🌻

    answer box

  2. Question 2

    What is 80 ÷ 5?

    80 ÷ 5 = ?

    answer box

  3. Question 3

    What is 32 ÷ 5?

    32 ÷ 5

    • 6 R3
    • 7 R2
    • 5 R7
    • 6 R2

  4. Question 4

    Which shows a way to find 8 × 24?

    • 8 × 20 + 8 × 4
    • 8 × 20 × 4
    • 8 × 20 + 4
    • 8 × 2 + 8 × 4

  5. Question 5

    What is 63 × 8?

    63 × 8 = ?

    answer box

  6. Question 6

    51 paintbrushes are shared equally by 3 tables. How many paintbrushes does each table get?

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    answer box

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