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

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

varsity tutors app store varsity tutors android store

Example Questions

Example Question #311 : Number & Operations With Fractions

David lives \(\displaystyle \frac{2}{4}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{1}{5}\) of the way there and then stopped to tie his shoe. How far did he travel before he stopped to tie his shoe? 

Possible Answers:

\(\displaystyle \frac{3}{20}\textup { of a mile}\)

\(\displaystyle \frac{2}{20}\textup { of a mile}\)

\(\displaystyle \frac{5}{20}\textup { of a mile}\)

\(\displaystyle 3\textup { miles}\)

\(\displaystyle 2\textup { miles}\)

Correct answer:

\(\displaystyle \frac{2}{20}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{1}{5}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{2}{4}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{1}{5}\times\frac{2}{4}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model. 

 2 20

We make the area model \(\displaystyle 4\) by \(\displaystyle 5\) because those are the denominators of our fractions. We shade up \(\displaystyle 1\) and over \(\displaystyle 2\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{1}{5}\times\frac{2}{4}=\frac{2}{20}\)

 

Example Question #312 : Number & Operations With Fractions

Matt lives \(\displaystyle \frac{2}{4}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{2}{5}\) of the way there and then stopped to tie his shoe. How far did he travel before he stopped to tie his shoe? 

Possible Answers:

\(\displaystyle 4\textup { miles}\)

\(\displaystyle \frac{8}{20}\textup { of a mile}\)

\(\displaystyle 5\textup { miles}\)

\(\displaystyle \frac{5}{20}\textup { of a mile}\)

\(\displaystyle \frac{4}{20}\textup { of a mile}\)

Correct answer:

\(\displaystyle \frac{4}{20}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{2}{5}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{2}{4}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{2}{5}\times\frac{2}{4}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model.

4 20

We make the area model \(\displaystyle 4\) by \(\displaystyle 5\) because those are the denominators of our fractions. We shade up \(\displaystyle 2\) and over \(\displaystyle 2\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{2}{5}\times\frac{2}{4}=\frac{4}{20}\)

Example Question #2991 : Isee Lower Level (Grades 5 6) Quantitative Reasoning

Brian lives \(\displaystyle \frac{2}{4}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{3}{5}\) of the way there and then stopped to tie his shoe. How far did he travel before he stopped to tie his shoe? 

Possible Answers:

\(\displaystyle \frac{1}{20}\textup { of a mile}\)

\(\displaystyle \frac{5}{20}\textup { of a mile}\)

\(\displaystyle 1\textup { mile}\)

\(\displaystyle \frac{6}{20}\textup { of a mile}\)

\(\displaystyle 5\textup { miles}\)

Correct answer:

\(\displaystyle \frac{6}{20}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{3}{5}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{2}{4}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{3}{5}\times\frac{2}{4}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model.

6 20

We make the area model \(\displaystyle 4\) by \(\displaystyle 5\) because those are the denominators of our fractions. We shade up \(\displaystyle 3\) and over \(\displaystyle 2\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{3}{5}\times\frac{2}{4}=\frac{6}{20}\)

 

Example Question #313 : Number & Operations With Fractions

Greg lives \(\displaystyle \frac{6}{7}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{1}{4}\) of the way there and then stopped to tie his shoe. How far did he travel before he stopped to tie his shoe? 

Possible Answers:

\(\displaystyle \frac{7}{28}\textup { of a mile}\)

\(\displaystyle \frac{6}{28}\textup { of a mile}\)

\(\displaystyle \frac{5}{28}\textup { of a mile}\)

\(\displaystyle 7\textup { miles}\)

\(\displaystyle 5\textup { miles}\)

Correct answer:

\(\displaystyle \frac{6}{28}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{1}{4}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{6}{7}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{1}{4}\times\frac{6}{7}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model.

6 28

We make the area model \(\displaystyle 7\) by \(\displaystyle 4\) because those are the denominators of our fractions. We shade up \(\displaystyle 1\) and over \(\displaystyle 6\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{1}{4}\times\frac{6}{7}=\frac{6}{28}\)

Example Question #314 : Number & Operations With Fractions

Dan lives \(\displaystyle \frac{6}{7}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{2}{4}\) of the way there and then stopped to tie his shoe. How far did he travel before he stopped to tie his shoe? 

 

Possible Answers:

\(\displaystyle 7\textup { miles}\)

\(\displaystyle \frac{12}{28}\textup { of a mile}\)

\(\displaystyle 12\textup { miles}\)

\(\displaystyle \frac{7}{28}\textup { of a mile}\)

\(\displaystyle \frac{8}{28}\textup { of a mile}\)

Correct answer:

\(\displaystyle \frac{12}{28}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{2}{4}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{6}{7}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{2}{4}\times\frac{6}{7}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model.

12 28

We make the area model \(\displaystyle 7\) by \(\displaystyle 4\) because those are the denominators of our fractions. We shade up \(\displaystyle 2\) and over \(\displaystyle 6\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{2}{4}\times\frac{6}{7}=\frac{12}{28}\)

 

Example Question #1165 : Common Core Math: Grade 5

Tim lives \(\displaystyle \frac{6}{7}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{3}{4}\) of the way there and then stopped to pet a dog. How far did he travel before he stopped to pet the dog? 

Possible Answers:

\(\displaystyle 9\textup { miles}\)

\(\displaystyle \frac{14}{28}\textup { of a mile}\)

\(\displaystyle \frac{18}{28}\textup { of a mile}\)

\(\displaystyle 18\textup { miles}\)

\(\displaystyle \frac{9}{28}\textup { of a mile}\)

Correct answer:

\(\displaystyle \frac{18}{28}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{3}{4}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{6}{7}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{3}{4}\times\frac{6}{7}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model.

18 28


We make the area model \(\displaystyle 7\) by \(\displaystyle 4\) because those are the denominators of our fractions. We shade up \(\displaystyle 3\) and over \(\displaystyle 6\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{3}{4}\times\frac{6}{7}=\frac{18}{28}\)

Example Question #1951 : Numbers And Operations

Zach lives \(\displaystyle \frac{5}{7}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{3}{4}\) of the way there and then stopped to pet a dog. How far did he travel before he stopped to pet the dog? 

Possible Answers:

\(\displaystyle \frac{15}{28}\textup { of a mile}\)

\(\displaystyle 8\textup { miles}\)

\(\displaystyle 11\textup { miles}\)

\(\displaystyle \frac{11}{28}\textup { of a mile}\)

\(\displaystyle \frac{8}{28}\textup { of a mile}\)

Correct answer:

\(\displaystyle \frac{15}{28}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{3}{4}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{5}{7}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{3}{4}\times\frac{5}{7}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model.

15 28

We make the area model \(\displaystyle 7\) by \(\displaystyle 4\) because those are the denominators of our fractions. We shade up \(\displaystyle 3\) and over \(\displaystyle 5\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{3}{4}\times\frac{5}{7}=\frac{15}{28}\)

Example Question #1166 : Common Core Math: Grade 5

Charlie lives \(\displaystyle \frac{5}{7}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{2}{4}\) of the way there and then stopped to pet a dog. How far did he travel before he stopped to pet the dog? 

Possible Answers:

\(\displaystyle 7\textup { miles}\)

\(\displaystyle \frac{10}{28}\textup { of a mile}\)

\(\displaystyle \frac{3}{28}\textup { of a mile}\)

\(\displaystyle \frac{7}{28}\textup { of a mile}\)

\(\displaystyle 28\textup { miles}\)

Correct answer:

\(\displaystyle \frac{10}{28}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{2}{4}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{5}{7}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{2}{4}\times\frac{5}{7}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model.

10 28

We make the area model \(\displaystyle 7\) by \(\displaystyle 4\) because those are the denominators of our fractions. We shade up \(\displaystyle 2\) and over \(\displaystyle 5\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{2}{4}\times\frac{5}{7}=\frac{10}{28}\)

Example Question #1171 : Common Core Math: Grade 5

Russell lives \(\displaystyle \frac{5}{7}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{1}{4}\) of the way there and then stopped to pet a dog. How far did he travel before he stopped to pet the dog? 

 

Possible Answers:

\(\displaystyle 28\textup { miles}\)

\(\displaystyle 4\textup { miles}\)

\(\displaystyle \frac{6}{28}\textup { of a mile}\)

\(\displaystyle \frac{4}{28}\textup { of a mile}\)

\(\displaystyle \frac{5}{28}\textup { of a mile}\)

Correct answer:

\(\displaystyle \frac{5}{28}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{1}{4}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{5}{7}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{1}{4}\times\frac{5}{7}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model.

5 28

We make the area model \(\displaystyle 7\) by \(\displaystyle 4\) because those are the denominators of our fractions. We shade up \(\displaystyle 1\) and over \(\displaystyle 5\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{1}{4}\times\frac{5}{7}=\frac{5}{28}\)

 

Example Question #1954 : Numbers And Operations

Shaun lives \(\displaystyle \frac{4}{7}\) of a mile away from his friend's house. He walked \(\displaystyle \frac{3}{4}\) of the way there and then stopped to pet a dog. How far did he travel before he stopped to pet the dog? 

 

 

Possible Answers:

\(\displaystyle \frac{1}{28}\textup { of a mile}\)

\(\displaystyle \frac{7}{28}\textup { of a mile}\)

\(\displaystyle 1\textup { mile}\)

\(\displaystyle 12\textup { miles}\)

\(\displaystyle \frac{12}{28}\textup { of a mile}\)

Correct answer:

\(\displaystyle \frac{12}{28}\textup { of a mile}\)

Explanation:

A keyword in our question that gives us a clue that we are going to multiply to solve this problem is the word "of". \(\displaystyle \frac{3}{4}\) of the way to his friends house he stopped. 

We know that his friend lives \(\displaystyle \frac{4}{7}\) of a mile away from him so we can set up our multiplication problem. 

\(\displaystyle \frac{3}{4}\times\frac{4}{7}\)

We can set up a tiled area model to help us solve the problem.

We use the denominators for the dimensions of our area model, and we use the numerators to fill parts of the area model.

 

12 28

We make the area model \(\displaystyle 7\) by \(\displaystyle 4\) because those are the denominators of our fractions. We shade up \(\displaystyle 3\) and over \(\displaystyle 4\), because those are the numerators of our fractions. Our answer is a fraction made up of the boxes that are shaded (the numerator) and the total tiles in the area model (the denominator).  

\(\displaystyle \frac{3}{4}\times\frac{4}{7}=\frac{12}{28}\)

Learning Tools by Varsity Tutors