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4th grade · Math · Unit 3 of 12

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.

Minnesota K-12 Academic Standards benchmark: 4.3.5.7; 4.3.5.8 · multiplying by one digit and dividing by one-digit divisors

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 Minnesota

In the Minnesota K-12 Academic Standards, this is unit 3 of 12 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: Minnesota Department of Education (MDE)

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

    88 stickers are shared equally among 4 albums. How many stickers go in each album?

    ⭐

    answer box

  2. Question 2

    What is 65 ÷ 5?

    65 ÷ 5 = ?

    answer box

  3. Question 3

    Which shows a way to find 9 × 21?

    • 9 × 2 + 9 × 1
    • 9 × 20 × 1
    • 9 × 20 + 9 × 1
    • 9 × 20 + 1

  4. Question 4

    What is 28 × 7?

    28 × 7 = ?

    answer box

  5. Question 5

    A train carries 68 passengers on each trip. How many passengers ride on 7 trips?

    🚂

    answer box

  6. Question 6

    What is 38 ÷ 5?

    38 ÷ 5

    • 7 R3
    • 8 R3
    • 7 R4
    • 6 R8

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