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5.10 Multiply fractions by whole numbers

Interactive practice questions

We are going to work out how to represent $3\times\frac{2}{5}$3×25 on the number line.

a

First mark $\frac{2}{5}$25 on the number line.

012
b

Now mark $3\times\frac{2}{5}$3×25 on this number line.

012
Easy
1min

We are going to work out how to represent $4\times\frac{3}{8}$4×38 on the number line.

Easy
1min

We are going to work out how to represent $3\times\frac{6}{5}$3×65 on the number line.

Medium
1min

We are going to work out how to represent $4\times\frac{3}{5}$4×35 and $12\times\frac{1}{5}$12×15 on the number line.

Medium
2min
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Outcomes

4.NF.B.4

Build fractions from unit fractions.

4.NF.B.4b

B. Understand a multiple of 𝑎/𝑏 as a multiple of a unit fraction 1/𝑏 , and use this understanding to multiply a whole number by a fraction. In general, n x 𝑎/𝑏 = 𝑛𝑎/𝑏 .

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