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6th grade · Math · Unit 3 of 21

Decimal × and ÷

Multiply and divide decimals

What your child practices

Multiplying and dividing decimals, estimating to check where the decimal point goes, and solving shopping and measurement problems.

New York State Learning Standards learning standard: NY-6.NS.3 · adding, subtracting, multiplying and dividing multi-digit decimals

How we explain it

Children can open this short lesson before they practice.

  1. Multiply as if there were no decimal points.
  2. Count the decimal places in the numbers you started with.
  3. Give your answer that many decimal places.

Example: 0.6 × 4 = ? Ignore the point: 6 × 4 = 24. 0.6 has 1 decimal place. So the answer has 1 decimal place: 2.4. Answer: 2.4

Decimal × and ÷ in New York

In the New York State Learning Standards, this is unit 3 of 21 in 6th grade Math, after Mixed Numbers & Ratios and before Percents & Budgets.

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 4.91 × 5?

    4.91 × 5 = ?

    answer box

  2. Question 2

    14 × 61 = 854. Use this fact to find 1.4 × 6.1.

    14 × 61 = 854

    • 8.54
    • 85.4
    • 0.854
    • 0.0854

  3. Question 3

    Sam buys 3 bus tickets at $1.55 each. What is the total cost in dollars?

    🎫$1.55 each

    answer box

  4. Question 4

    A 29.4 m ribbon is cut into 7 equal pieces. How long is each piece?

    answer boxm

  5. Question 5

    Which is the best estimate for 9.15 × 7.1?

    • 630
    • 6300
    • 6.3
    • 63

  6. Question 6

    What is 2.1 × 0.5?

    2.1 × 0.5 = ?

    answer box

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