Multiply a Fraction by a Whole Number: CCSS.Math.Content.4.NF.B.4 - Common Core: 4th Grade Math

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Question

$3\times\frac{1}{2}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{3}{1}\times\frac{1}{2}=\frac{3}{2}$

$\frac{3}{2}=1\frac{1}{2}$ because can go into one time, and $\frac{1}{2}$ is left over.

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Question

$2\times\frac{1}{3}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{2}{1}\times\frac{1}{3}=\frac{2}{3}$

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Question

$3\times\frac{2}{5}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{3}{1}\times\frac{2}{5}=\frac{6}{5}$

$\frac{6}{5}=1\frac{1}{5}$ because can go into one time, and $\frac{1}{5}$ is left over.

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Question

$4\times\frac{1}{7}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{4}{1}\times\frac{1}{7}=\frac{4}{7}$

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Question

$5\times\frac{1}{5}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{5}{1}\times\frac{1}{5}=\frac{5}{5}$

$\frac{5}{5}=1$ because can go into one time.

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Question

$6\times\frac{2}{3}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{6}{1}\times\frac{2}{3}=\frac{12}{3}$

$\frac{12}{3}=4$ because can go into four times.

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Question

$7\times\frac{3}{8}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{7}{1}\times\frac{3}{8}=\frac{21}{8}$

$\frac{21}{8}=2\frac{5}{8}$ because can go into two times, and $\frac{5}{8}$ is left over.

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Question

$8\times\frac{1}{3}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{8}{1}\times\frac{1}{3}=\frac{8}{3}$

$\frac{8}{3}=2\frac{2}{3}$ because can go into two times, and $\frac{2}{3}$ is left over.

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Question

$9\times\frac{2}{3}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{9}{1}\times\frac{2}{3}=\frac{18}{3}$

$\frac{18}{3}=6$ because can go into six times.

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Question

$10\times\frac{1}{5}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{10}{1}\times\frac{1}{5}=\frac{10}{5}$

$\frac{10}{5}=2$ because can go into two times.

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Question

$11\times\frac{1}{3}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{11}{1}\times\frac{1}{3}=\frac{11}{3}$

$\frac{11}{3}=3\frac{2}{3}$ because can go into three times, and $\frac{2}{3}$ is left over.

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Question

$12\times\frac{3}{4}=$

Answer

When we multiply a fraction by a whole number we need to make the whole number into a fraction by putting our whole number over .

$\frac{12}{1}\times\frac{3}{4}=\frac{36}{4}$

$\frac{36}{4}=9$ because can go into nine times.

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