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4th grade · Math · Unit 3 of 17

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.

New York State Learning Standards learning standard: NY-4.NBT.5; NY-4.NBT.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 New York

In the New York State Learning Standards, this is unit 3 of 17 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: 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

    What is 384 × 3?

    384 × 3 = ?

    answer box

  2. Question 2

    What is 700 × 6?

    700 × 6 = ?

    • 420
    • 42,000
    • 4200
    • 4900

  3. Question 3

    What is 36 ÷ 8?

    36 ÷ 8

    • 5 R4
    • 4 R4
    • 4 R5
    • 3 R12

  4. Question 4

    What is 66 ÷ 3?

    66 ÷ 3 = ?

    answer box

  5. Question 5

    Which shows a way to find 3 × 71?

    • 3 × 70 + 3 × 1
    • 3 × 7 + 3 × 1
    • 3 × 70 + 1
    • 3 × 70 × 1

  6. Question 6

    56 paintbrushes are shared equally by 4 tables. How many paintbrushes does each table get?

    🎨

    answer box

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