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5th grade · Math · Unit 2 of 15

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.

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

In the New York State Learning Standards, this is unit 2 of 15 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: 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

    Which has the same product as 25 × 8?

    • 50 × 4
    • 50 × 16
    • 25 × 4
    • 50 × 8

  2. Question 2

    A club buys 28 plants for $21 each and a bag of soil for $40. How many dollars do they spend in all?

    answer box

  3. Question 3

    Multiply.

    73 × 29 = ?

    answer box

  4. Question 4

    Use the area model. What is 74 × 35?

    Area model for 74 × 35
    ×704
    302100120
    535020

    answer box

  5. Question 5

    A bakery packs 23 muffins in each box. How many muffins are in 96 boxes?

    answer boxmuffins

  6. Question 6

    Which product is the greatest?

    • 58 × 22
    • 34 × 12
    • 21 × 19
    • 28 × 15

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