Common Core: 4th Grade Math : Common Core Math: Grade 4

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

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Example Questions

Example Question #61 : Understand A Fraction A/B As A Multiple Of 1/B: Ccss.Math.Content.4.Nf.B.4a

\(\displaystyle 11\times\frac{1}{8}=\) 

Possible Answers:

\(\displaystyle \frac{13}{8}=1\frac{5}{8}\)

\(\displaystyle \frac{11}{8}=1\frac{3}{8}\)

\(\displaystyle \frac{12}{8}=1\frac{4}{8}\)

\(\displaystyle \frac{9}{8}=1\frac{1}{8}\)

\(\displaystyle \frac{10}{8}=1\frac{2}{8}\)

Correct answer:

\(\displaystyle \frac{11}{8}=1\frac{3}{8}\)

Explanation:

\(\displaystyle 11\times\frac{1}{8}\) means the same thing as adding \(\displaystyle \frac{1}{8}\) eleven times.

On our number line, we can make \(\displaystyle 11\) jumps of \(\displaystyle \frac{1}{8}\)

11 8 number line

Example Question #161 : How To Multiply Fractions

\(\displaystyle 13\times\frac{1}{8}=\) 

Possible Answers:

\(\displaystyle \frac{13}{8}=1\frac{5}{8}\)

\(\displaystyle \frac{10}{8}=1\frac{2}{8}\)

\(\displaystyle \frac{12}{8}=1\frac{4}{8}\)

\(\displaystyle \frac{11}{8}=1\frac{3}{8}\)

\(\displaystyle \frac{14}{8}=1\frac{6}{8}\)

Correct answer:

\(\displaystyle \frac{13}{8}=1\frac{5}{8}\)

Explanation:

\(\displaystyle 13\times\frac{1}{8}\) means the same thing as adding \(\displaystyle \frac{1}{8}\) thirteen times.

On our number line, we can make \(\displaystyle 13\) jumps of \(\displaystyle \frac{1}{8}\)

13 8 number line

Example Question #113 : Build Fractions From Unit Fractions

\(\displaystyle 8\times\frac{1}{10}=\)

Possible Answers:

\(\displaystyle \frac{7}{10}\)

\(\displaystyle \frac{5}{10}\)

\(\displaystyle \frac{6}{10}\)

\(\displaystyle \frac{4}{10}\)

\(\displaystyle \frac{8}{10}\)

Correct answer:

\(\displaystyle \frac{8}{10}\)

Explanation:

\(\displaystyle 8\times\frac{1}{10}\) means the same thing as adding \(\displaystyle \frac{1}{10}\) eight times.

On our number line, we can make \(\displaystyle 8\) jumps of \(\displaystyle \frac{1}{10}\)

8 10 number line

Example Question #111 : Build Fractions From Unit Fractions

\(\displaystyle 10\times\frac{1}{10}=\) 

Possible Answers:

\(\displaystyle \frac{10}{10}=1\)

\(\displaystyle \frac{12}{10}=1\frac{2}{10}\)

\(\displaystyle \frac{13}{10}=1\frac{3}{10}\)

\(\displaystyle \frac{11}{10}=1\frac{1}{10}\)

\(\displaystyle \frac{9}{10}\)

Correct answer:

\(\displaystyle \frac{10}{10}=1\)

Explanation:

\(\displaystyle 10\times\frac{1}{10}\) means the same thing as adding \(\displaystyle \frac{1}{10}\) ten times.

On our number line, we can make \(\displaystyle 10\) jumps of \(\displaystyle \frac{1}{10}\)

10 10 number line

Example Question #66 : Understand A Fraction A/B As A Multiple Of 1/B: Ccss.Math.Content.4.Nf.B.4a

\(\displaystyle 12\times\frac{1}{10}=\)

Possible Answers:

\(\displaystyle \frac{8}{10}\)

\(\displaystyle \frac{7}{10}\)

\(\displaystyle \frac{10}{10}=1\)

\(\displaystyle \frac{11}{12}=1\frac{1}{12}\)

\(\displaystyle \frac{12}{10}=1\frac{2}{10}\)

Correct answer:

\(\displaystyle \frac{12}{10}=1\frac{2}{10}\)

Explanation:

\(\displaystyle 12\times\frac{1}{10}\) means the same thing as adding \(\displaystyle \frac{1}{10}\) twelve times.

On our number line, we can make \(\displaystyle 12\) jumps of \(\displaystyle \frac{1}{10}\)

12 10 number line

Example Question #67 : Understand A Fraction A/B As A Multiple Of 1/B: Ccss.Math.Content.4.Nf.B.4a

\(\displaystyle 8\times\frac{1}{12}=\) 

Possible Answers:

\(\displaystyle \frac{4}{12}\)

\(\displaystyle \frac{5}{12}\)

\(\displaystyle \frac{7}{12}\)

\(\displaystyle \frac{8}{12}\)

\(\displaystyle \frac{6}{12}\)

Correct answer:

\(\displaystyle \frac{8}{12}\)

Explanation:

\(\displaystyle 8\times\frac{1}{12}\) means the same thing as adding \(\displaystyle \frac{1}{12}\) eight times.

On our number line, we can make \(\displaystyle 8\) jumps of \(\displaystyle \frac{1}{12}\)

8 12 number line

Example Question #71 : Understand A Fraction A/B As A Multiple Of 1/B: Ccss.Math.Content.4.Nf.B.4a

\(\displaystyle 9\times\frac{1}{12}=\) 

Possible Answers:

\(\displaystyle \frac{10}{12}\)

\(\displaystyle \frac{8}{12}\)

\(\displaystyle \frac{9}{12}\)

\(\displaystyle \frac{11}{12}\)

\(\displaystyle \frac{7}{12}\)

Correct answer:

\(\displaystyle \frac{9}{12}\)

Explanation:

\(\displaystyle 9\times\frac{1}{12}\) means the same thing as adding \(\displaystyle \frac{1}{12}\) nine times.

On our number line, we can make \(\displaystyle 9\) jumps of \(\displaystyle \frac{1}{12}\)

9 12 number line

Example Question #161 : How To Multiply Fractions

\(\displaystyle 11\times\frac{1}{12}=\)

Possible Answers:

\(\displaystyle \frac{7}{12}\)

\(\displaystyle \frac{9}{12}\)

\(\displaystyle \frac{8}{12}\)

\(\displaystyle \frac{10}{12}\)

\(\displaystyle \frac{11}{12}\)

Correct answer:

\(\displaystyle \frac{11}{12}\)

Explanation:

\(\displaystyle 11\times\frac{1}{12}\) means the same thing as adding \(\displaystyle \frac{1}{12}\) eleven times.

On our number line, we can make \(\displaystyle 11\) jumps of \(\displaystyle \frac{1}{12}\)

11 12 number line

Example Question #73 : Understand A Fraction A/B As A Multiple Of 1/B: Ccss.Math.Content.4.Nf.B.4a

\(\displaystyle 9\times\frac{1}{7}=\)

Possible Answers:

\(\displaystyle \frac{7}{7}=1\)

\(\displaystyle \frac{6}{7}\)

\(\displaystyle \frac{9}{7}=1\frac{2}{7}\)

\(\displaystyle \frac{5}{7}\)

\(\displaystyle \frac{8}{7}=1\frac{1}{7}\)

Correct answer:

\(\displaystyle \frac{9}{7}=1\frac{2}{7}\)

Explanation:

\(\displaystyle 9\times\frac{1}{7}\) means the same thing as adding \(\displaystyle \frac{1}{7}\) nine times.

On our number line, we can make \(\displaystyle 9\) jumps of \(\displaystyle \frac{1}{7}\)

9 7 number line

Example Question #71 : Understand A Fraction A/B As A Multiple Of 1/B: Ccss.Math.Content.4.Nf.B.4a

\(\displaystyle 11\times\frac{1}{7}=\)

Possible Answers:

\(\displaystyle \frac{10}{7}=1\frac{3}{7}\)

\(\displaystyle \frac{7}{7}=1\)

\(\displaystyle \frac{8}{7}=1\frac{1}{7}\)

\(\displaystyle \frac{11}{7}=1\frac{4}{7}\)

\(\displaystyle \frac{9}{7}=1\frac{2}{7}\)

Correct answer:

\(\displaystyle \frac{11}{7}=1\frac{4}{7}\)

Explanation:

\(\displaystyle 11\times\frac{1}{7}\) means the same thing as adding \(\displaystyle \frac{1}{7}\) eleven times.

On our number line, we can make \(\displaystyle 11\) jumps of \(\displaystyle \frac{1}{7}\)

11 7 number line

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