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5th grade · Math · Unit 2 of 14

Multiply

Multiply up to three digits

What your child practices

Multiplying 2- and 3-digit numbers using area models and partial products, patterns with 10, 100 and 1000, doubling and halving, and estimating products by rounding.

Maine Learning Results learning standard: 5.NBT.B.5 · fluently multiplying multi-digit whole numbers

How we explain it

Children can open this short lesson before they practice.

  1. Break the bigger number into place values.
  2. Multiply each part, then add the parts together.
  3. Estimate by rounding to check your answer makes sense.

Example: 23 × 14 = ? 23 × 10 = 230. 23 × 4 = 92. 230 + 92 = 322. Answer: 322

Multiply in Maine

In the Maine Learning Results, this is unit 2 of 14 in 5th grade Math, after Numbers to a Million and before Divide.

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: Maine 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

    Use the area model. What is 12 × 36?

    Area model for 12 × 36
    ×102
    3030060
    66012

    answer box

  2. Question 2

    Which has the same product as 50 × 28?

    • 100 × 28
    • 52 × 26
    • 50 × 14
    • 100 × 14

  3. Question 3

    Multiply using a pattern.

    238 × 100 = ?

    answer box

  4. Question 4

    Round each factor to the nearest ten. What is the estimate for 31 × 72?

    • 2100
    • 2800
    • 21,000
    • 210

  5. Question 5

    Which product is the greatest?

    • 47 × 28
    • 47 × 22
    • 39 × 24
    • 30 × 12

  6. Question 6

    A delivery van drives 22 km every day. How far does it drive in 76 days?

    answer boxkm

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