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Common Core: 4th Grade Math : Add and Subtract Mixed Numbers with Like Denominators: CCSS.Math.Content.4.NF.B.3c

Study concepts, example questions & explanations for Common Core: 4th Grade Math

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All Common Core: 4th Grade Math Resources

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Example Questions

Example Question #21 : Adding Mixed Numbers

Solve:

$3\frac{1}{3}+10\frac{1}{3}$

Possible Answers:

$13\frac{2}{3}$

$14\frac{2}{3}$

$12\frac{2}{6}$

$13\frac{2}{6}$

$14\frac{2}{6}$

Correct answer:

$13\frac{2}{3}$

Explanation:

When we add mixed numbers, we add whole numbers to whole numbers and fractions to fractions.

3+10=13

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

Remember, when we are adding fractions we must have common denominators and we only add the numerators.

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Example Question #22 : Adding Mixed Numbers

Solve:

$2\frac{1}{4}+7\frac{2}{4}$

Possible Answers:

$9\frac{2}4{}$

$9\frac{3}{8}$

$9\frac{3}{4}$

$9\frac{1}4{}$

$9\frac{1}2{}$

Correct answer:

$9\frac{3}{4}$

Explanation:

When we add mixed numbers, we add whole numbers to whole numbers and fractions to fractions.

2+7=9

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

Remember, when we are adding fractions we must have common denominators and we only add the numerators.

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Example Question #1991 : Numbers And Operations

$17\frac{1}{2}-7\frac{1}{2}$

Possible Answers:

$10\frac{1}{2}$

$7\frac{2}{2}$

$24\frac{2}{2}$

Correct answer:

Explanation:

When we subtract mixed numbers, we subtract whole numbers by whole numbers and fractions by fractions.

17-7=10

$\frac{1}{2}-\frac{1}{2}=0$

Remember, when we are subtracting fractions we must have common denominators and we only subtract the numerators.

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Example Question #1992 : Numbers And Operations

$18\frac{3}{4}-7\frac{2}{4}$

Possible Answers:

$11\frac{1}{4}$

$11\frac{2}{4}$

$9\frac{2}{4}$

$15\frac{5}{4}$

$9\frac{1}{4}$

Correct answer:

$11\frac{1}{4}$

Explanation:

When we subtract mixed numbers, we subtract whole numbers by whole numbers and fractions by fractions.

18-7=11

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

Remember, when we are subtracting fractions we must have common denominators and we only subtract the numerators.

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Example Question #1993 : Numbers And Operations

$15\frac{2}{3}-8\frac{1}{3}$

Possible Answers:

$8\frac{1}{3}$

$7\frac{1}{3}$

$23\frac{1}{3}$

$9\frac{1}{3}$

$23\frac{3}{3}$

Correct answer:

$7\frac{1}{3}$

Explanation:

When we subtract mixed numbers, we subtract whole numbers by whole numbers and fractions by fractions.

15-8=7

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

Remember, when we are subtracting fractions we must have common denominators and we only subtract the numerators.

Report an Error

Example Question #1994 : Numbers And Operations

$12\frac{4}{5}-12\frac{2}{5}$

Possible Answers:

$\frac{2}{5}$

$1\frac{3}{5}$

$\frac{3}{5}$

$24\frac{6}{5}$

$1\frac{2}{5}$

Correct answer:

$\frac{2}{5}$

Explanation:

When we subtract mixed numbers, we subtract whole numbers by whole numbers and fractions by fractions.

12-12=0

$\frac{4}{5}-\frac{2}{5}=\frac{2}{5}$

Remember, when we are subtracting fractions we must have common denominators and we only subtract the numerators.

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Example Question #1995 : Numbers And Operations

$12\frac{7}{12}-4\frac{2}{12}$

Possible Answers:

$10\frac{5}{12}$

$9\frac{5}{12}$

$9\frac{4}{12}$

$8\frac{5}{12}$

$8\frac{4}{12}$

Correct answer:

$8\frac{5}{12}$

Explanation:

When we subtract mixed numbers, we subtract whole numbers by whole numbers and fractions by fractions.

12-4=8

$\frac{7}{12}-\frac{2}{12}=\frac{5}{12}$

Remember, when we are subtracting fractions we must have common denominators and we only subtract the numerators.

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Example Question #1996 : Numbers And Operations

$27\frac{9}{12}-9\frac{2}{12}$

Possible Answers:

$16\frac{7}{12}$

$19\frac{7}{12}$

$18\frac{7}{12}$

$17\frac{7}{12}$

$15\frac{7}{12}$

Correct answer:

$18\frac{7}{12}$

Explanation:

When we subtract mixed numbers, we subtract whole numbers by whole numbers and fractions by fractions.

27-9=18

$\frac{9}{12}-\frac{2}{12}=\frac{7}{12}$

Remember, when we are subtracting fractions we must have common denominators and we only subtract the numerators.

Report an Error

Example Question #1151 : Common Core Math: Grade 4

$14\frac{6}{11}-5\frac{2}{11}$

Possible Answers:

$19\frac{8}{11}$

$9\frac{4}{11}$

$7\frac{4}{11}$

$8\frac{4}{11}$

$18\frac{7}{11}$

Correct answer:

$9\frac{4}{11}$

Explanation:

When we subtract mixed numbers, we subtract whole numbers by whole numbers and fractions by fractions.

14-5=9

$\frac{6}{11}-\frac{2}{11}=\frac{4}{11}$

Remember, when we are subtracting fractions we must have common denominators and we only subtract the numerators.

Report an Error

Example Question #1152 : Common Core Math: Grade 4

Solve the following:

$43\frac{5}{9}-37\frac{4}{9}$

Possible Answers:

$6\frac{1}{8}$

$7\frac{1}{9}$

$6\frac{1}{9}$

$7\frac{1}{8}$

$6\frac{2}{9}$

Correct answer:

$6\frac{1}{9}$

Explanation:

When we subtract mixed numbers, we subtract whole numbers by whole numbers and fractions by fractions.

43-37=6

$\frac{5}{9}-\frac{4}{9}=\frac{1}{9}$

Remember, when we are subtracting fractions we must have common denominators and we only subtract the numerators.

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All Common Core: 4th Grade Math Resources

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Common Core: 4th Grade Math : Add and Subtract Mixed Numbers with Like Denominators: CCSS.Math.Content.4.NF.B.3c

Study concepts, example questions & explanations for Common Core: 4th Grade Math

All Common Core: 4th Grade Math Resources

Example Questions

Example Question #21 : Adding Mixed Numbers

Example Question #22 : Adding Mixed Numbers

Example Question #1991 : Numbers And Operations

Example Question #1992 : Numbers And Operations

Example Question #1993 : Numbers And Operations

Example Question #1994 : Numbers And Operations

Example Question #1995 : Numbers And Operations

Example Question #1996 : Numbers And Operations

Example Question #1151 : Common Core Math: Grade 4

Example Question #1152 : Common Core Math: Grade 4

All Common Core: 4th Grade Math Resources

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