Lesson 9 of 10 · Grades 3 to 5
Practice: Multiply a fraction by a whole number
Use the fast rule: multiply the numerator by the whole number, keep the denominator, and simplify if the answer is more than one whole. Ten questions follow.
How to use this page
This page gives you ten more questions on the same idea as the lesson "Multiply a fraction by a whole number". Work through them at your own speed. Write your answer down or say it out loud before you open the answer box, so you give yourself a real chance to think.
If a question feels hard, go back to the lesson and look at the worked example again. Getting a question wrong is useful; it shows you the part that needs one more look.
Practice questions
Answer all ten questions in your notebook or in your head. Then open each answer to check your work.
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3 x 1/5 = ?
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3/5.
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2 x 3/8 = ?
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6/8, which simplifies to 3/4.
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5 x 2/7 = ?
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10/7, which is 1 3/7.
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4 x 1/6 = ?
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4/6, which simplifies to 2/3.
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6 x 3/4 = ?
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18/4, which is 4 1/2.
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7 x 2/3 = ?
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14/3, which is 4 2/3.
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3 x 5/8 = ?
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15/8, which is 1 7/8.
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8 x 1/2 = ?
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4. Eight halves make four wholes.
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Five bowls each hold 3/4 cup of yoghurt. How much yoghurt is that altogether?
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15/4, which is 3 3/4 cups.
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Twelve dogs each eat 1/2 can of food. How many cans is that?
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6 cans. 12 x 1/2 = 12/2 = 6.