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Common Core: 5th Grade Math : Number & Operations with Fractions

Study concepts, example questions & explanations for Common Core: 5th Grade Math

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All Common Core: 5th Grade Math Resources

7 Diagnostic Tests 225 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #481 : Number & Operations With Fractions

A recipe calls for $\frac{2}{3}$ of a cup of flour. If you double the recipe, how much flour do you need?

Possible Answers:

$2\frac{2}{3}\ cups$

$1\frac{1}{3}\ cups$

$\frac{1}{3}\ cup$

$2\frac{1}{3}\ cups$

$1\frac{2}{3}\ cups$

Correct answer:

$1\frac{1}{3}\ cups$

Explanation:

When you multiply a fraction by a whole number, you first want to make the whole number into a fraction. You do that by putting the whole number over $\small 1.$ Then multiply the numerator by the numerator and denominator by the denominator.

$\frac{2}{3}\times\frac{2}{1}=\frac{4}{3}$

Reduce to find your final answer.

$\frac{4}{3}=1\frac{1}{3}$

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Example Question #482 : Number & Operations With Fractions

A recipe calls for $\frac{1}{4}$ of a cup of flour. If you triple the recipe, how much flour do you need?

Possible Answers:

$3\frac{1}{4}\ cups$

$\frac{1}{2}\ cup$

$2\frac{1}{4}\ cups$

$1\frac{1}{4}\ cups$

$\frac{3}{4}\ cup$

Correct answer:

$\frac{3}{4}\ cup$

Explanation:

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

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Example Question #483 : Number & Operations With Fractions

A recipe calls for $\frac{1}{2}$ of a cup of flour. If you triple the recipe, how much flour do you need?

Possible Answers:

$2\frac{1}{2}\ cups$

$3\frac{1}{2}\ cups$

$1\frac{1}{2}\ cups$

$\frac{1}{2}\ cup$

$\frac{3}{4}\ cup$

Correct answer:

$1\frac{1}{2}\ cups$

Explanation:

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

Reduce to find your final answer.

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

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Example Question #484 : Number & Operations With Fractions

A recipe calls for $\frac{3}{4}$ of a cup of flour. If you triple the recipe, how much flour do you need?

Possible Answers:

$3\ cups$

$\frac{2}{4}\ cups$

$1\frac{1}{4}\ cups$

$3\frac{1}{4}\ cups$

$2\frac{1}{4}\ cups$

Correct answer:

$2\frac{1}{4}\ cups$

Explanation:

$\frac{3}{4}\times\frac{3}{1}=\frac{9}{4}$

Reduce to find your final answer.

$\frac{9}{4}=2\frac{1}{4}$

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Example Question #485 : Number & Operations With Fractions

A recipe calls for $\frac{2}{5}$ of a cup of flour. If you triple the recipe, how much flour do you need?

Possible Answers:

$1\frac{1}{5}\ cups$

$1\frac{3}{5}\ cups$

$2\frac{1}{5}\ cups$

$3\frac{1}{5}\ cups$

$1\frac{2}{5}\ cups$

Correct answer:

$1\frac{1}{5}\ cups$

Explanation:

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

Reduce to find your final answer.

$\frac{6}{5}=1\frac{1}{5}$

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Example Question #251 : How To Multiply Fractions

A recipe calls for $\frac{1}{3}$ of a cup of flour. If you triple the recipe, how much flour do you need?

Possible Answers:

$3\ cups$

$3\frac{1}{3}\ cups$

$2\ cups$

$\frac{2}{3}\ cup$

$1\ cup$

Correct answer:

$1\ cup$

Explanation:

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

Reduce to find your final answer.

$\frac{3}{3}\div\frac{3}{3}=\frac{1}{1}=1$

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Example Question #1911 : Ssat Middle Level Quantitative (Math)

A recipe calls for $\frac{2}{3}$ of a cup of flour. If you triple the recipe, how much flour do you need?

Possible Answers:

$1\frac{2}{3}\ cups$

$3\ cups$

$1\ cup$

$2\ cups$

$1\frac{1}{3}\ cups$

Correct answer:

$2\ cups$

Explanation:

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

Reduce to find your final answer.

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

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Example Question #1912 : Ssat Middle Level Quantitative (Math)

Mary is trying out for the track team this year. On Monday she ran laps. On Tuesday she runs $1\tfrac{1}{2}$ times as many laps as she did on Monday. How many laps does she run on Tuesday?

Possible Answers:

$20\ laps$

$18\ laps$

$26\ laps$

$6\ laps$

$24\ laps$

Correct answer:

$18\ laps$

Explanation:

First, you need to change the mixed number into an improper fraction. To do this, you multiply the denominator by the whole number, then add the numerator. That number becomes the numerator of your improper fraction. The denominator stays the same.

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

Then put your whole number over to make it a fraction, and multiply like normal.

$\frac{12}{1}\times\frac{3}{2}=\frac{36}{2}$

Finally, reduce to find your final answer.

$\frac{36}{2}=18$

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Example Question #1341 : Common Core Math: Grade 5

Mary is trying out for the track team this year. On Monday she ran laps. On Tuesday she runs $1\tfrac{1}{2}$ times as many laps as she did on Monday. How many laps does she run on Tuesday?

Possible Answers:

$30\frac{1}{2}\ laps$

$40\ laps$

$30\ laps$

$10\frac{1}{2}\ laps$

$10\ laps$

Correct answer:

$30\ laps$

Explanation:

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

Then put your whole number over to make it a fraction, and multiply like normal.

$\frac{20}{1}\times\frac{3}{2}=\frac{60}{2}$

Finally, reduce to find your final answer.

$\frac{60}{2}=30$

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Example Question #252 : How To Multiply Fractions

Mary is trying out for the track team this year. On Monday she ran laps. On Tuesday she runs $1\tfrac{1}{2}$ times as many laps as she did on Monday. How many laps does she run on Tuesday?

Possible Answers:

$36\frac{1}{2}\ laps$

$8\ laps$

$8\frac{1}{2}\ laps$

$36\ laps$

$24\ laps$

Correct answer:

$24\ laps$

Explanation:

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

Then put your whole number over to make it a fraction, and multiply like normal.

$\frac{16}{1}\times\frac{3}{2}=\frac{48}{2}$

Finally, reduce to find your final answer.

$\frac{48}{2}=24$

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Common Core: 5th Grade Math : Number & Operations with Fractions

Study concepts, example questions & explanations for Common Core: 5th Grade Math

All Common Core: 5th Grade Math Resources

Example Questions

Example Question #481 : Number & Operations With Fractions

Example Question #482 : Number & Operations With Fractions

Example Question #483 : Number & Operations With Fractions

Example Question #484 : Number & Operations With Fractions

Example Question #485 : Number & Operations With Fractions

Example Question #251 : How To Multiply Fractions

Example Question #1911 : Ssat Middle Level Quantitative (Math)

Example Question #1912 : Ssat Middle Level Quantitative (Math)

Example Question #1341 : Common Core Math: Grade 5

Example Question #252 : How To Multiply Fractions

All Common Core: 5th Grade Math Resources

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