ISEE Lower Level Quantitative : Numbers and Operations

Study concepts, example questions & explanations for ISEE Lower Level Quantitative

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Example Questions

Example Question #321 : Fractions

Gerry lives \(\displaystyle \frac{2}{7}\) 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:

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

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

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

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

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

Correct answer:

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

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 \(\displaystyle \frac{2}{7}\) of a mile away from him so we can set up our multiplication problem. 

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

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.

4 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 \(\displaystyle 2\), 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).  

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

Example Question #61 : Interpret The Product (A/B) × Q As A Part Of A Partition Of Q Into B Equal Parts: Ccss.Math.Content.5.Nf.B.4a

Julia lives \(\displaystyle \frac{8}{9}\) of a mile away from her friend's house. She walked \(\displaystyle \frac{2}{3}\) of the way there and then stopped to get ice cream from an ice cream truck driving by. How far did she travel before she stopped to get ice cream? 

 

Possible Answers:

\(\displaystyle \frac{16}{28}\textup { of a mile}\)

\(\displaystyle \frac{10}{27}\textup { of a mile}\)

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

\(\displaystyle \frac{8}{27}\textup { of a mile}\)

\(\displaystyle \frac{16}{27}\textup { of a mile}\)

Correct answer:

\(\displaystyle \frac{16}{27}\textup { of a mile}\)

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". \(\displaystyle \frac{2}{3}\) of the way to her friends house she stopped. 

We know that her friend lives \(\displaystyle \frac{8}{9}\) of a mile away from her so we can set up our multiplication problem. 

\(\displaystyle \frac{2}{3}\times\frac{8}{9}\)

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.

16 27

We make the area model \(\displaystyle 9\) by \(\displaystyle 3\) because those are the denominators of our fractions. We shade up \(\displaystyle 2\) and over \(\displaystyle 8\), 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).  

\(\displaystyle \frac{2}{3}\times\frac{8}{9}=\frac{16}{27}\)

Example Question #62 : Interpret The Product (A/B) × Q As A Part Of A Partition Of Q Into B Equal Parts: Ccss.Math.Content.5.Nf.B.4a

Jessie lives \(\displaystyle \frac{7}{9}\) of a mile away from her friend's house. She walked \(\displaystyle \frac{2}{3}\) of the way there and then stopped to get ice cream from an ice cream truck driving by. How far did she travel before she stopped to get ice cream? 

Possible Answers:

\(\displaystyle \frac{10}{26}\textup { of a mile}\)

\(\displaystyle \frac{9}{27}\textup { of a mile}\)

\(\displaystyle \frac{14}{27}\textup { of a mile}\)

\(\displaystyle \frac{10}{27}\textup { of a mile}\)

\(\displaystyle \frac{14}{26}\textup { of a mile}\)

Correct answer:

\(\displaystyle \frac{14}{27}\textup { of a mile}\)

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". \(\displaystyle \frac{2}{3}\) of the way to her friends house she stopped. 

We know that her friend lives \(\displaystyle \frac{7}{9}\) of a mile away from her so we can set up our multiplication problem. 

\(\displaystyle \frac{2}{3}\times\frac{7}{9}\)

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.

14 27

We make the area model \(\displaystyle 9\) by \(\displaystyle 3\) because those are the denominators of our fractions. We shade up \(\displaystyle 2\) and over \(\displaystyle 7\), 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).  

\(\displaystyle \frac{2}{3}\times\frac{7}{9}=\frac{14}{27}\)

Example Question #63 : Interpret The Product (A/B) × Q As A Part Of A Partition Of Q Into B Equal Parts: Ccss.Math.Content.5.Nf.B.4a

Erica lives \(\displaystyle \frac{7}{9}\) of a mile away from her friend's house. She walked \(\displaystyle \frac{1}{3}\) of the way there and then stopped to get ice cream from an ice cream truck driving by. How far did she travel before she stopped to get ice cream? 

Possible Answers:

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

\(\displaystyle \frac{7}{27}\textup { of a mile}\)

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

\(\displaystyle \frac{8}{27}\textup { of a mile}\)

\(\displaystyle \frac{6}{27}\textup { of a mile}\)

Correct answer:

\(\displaystyle \frac{7}{27}\textup { of a mile}\)

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". \(\displaystyle \frac{1}{3}\) of the way to her friends house she stopped. 

We know that her friend lives \(\displaystyle \frac{7}{9}\) of a mile away from her so we can set up our multiplication problem. 

\(\displaystyle \frac{1}{3}\times\frac{7}{9}\)

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.

7 27

We make the area model \(\displaystyle 9\) by \(\displaystyle 3\) because those are the denominators of our fractions. We shade up \(\displaystyle 1\) and over \(\displaystyle 7\), 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).  

\(\displaystyle \frac{1}{3}\times\frac{7}{9}=\frac{7}{27}\)

Example Question #64 : Interpret The Product (A/B) × Q As A Part Of A Partition Of Q Into B Equal Parts: Ccss.Math.Content.5.Nf.B.4a

Olivia lives \(\displaystyle \frac{6}{9}\) of a mile away from her friend's house. She walked \(\displaystyle \frac{1}{3}\) of the way there and then stopped to get ice cream from an ice cream truck driving by. How far did she travel before she stopped to get ice cream? 

Possible Answers:

\(\displaystyle \frac{6}{26}\text{ of a mile}\)

\(\displaystyle \frac{6}{27}\text{ of a mile}\)

\(\displaystyle \frac{7}{27}\text{ of a mile}\)

\(\displaystyle \frac{5}{26}\text{ of a mile}\)

\(\displaystyle \frac{7}{26}\text{ of a mile}\)

Correct answer:

\(\displaystyle \frac{6}{27}\text{ of a mile}\)

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". \(\displaystyle \frac{1}{3}\) of the way to her friends house she stopped. 

We know that her friend lives \(\displaystyle \frac{6}{9}\) of a mile away from her so we can set up our multiplication problem. 

\(\displaystyle \frac{1}{3}\times\frac{6}{9}\)

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 27

We make the area model \(\displaystyle 9\) by \(\displaystyle 3\) 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).  

\(\displaystyle \frac{1}{3}\times\frac{6}{9}=\frac{6}{27}\)

Example Question #65 : Interpret The Product (A/B) × Q As A Part Of A Partition Of Q Into B Equal Parts: Ccss.Math.Content.5.Nf.B.4a

Holly lives \(\displaystyle \frac{6}{9}\) of a mile away from her friend's house. She walked \(\displaystyle \frac{2}{3}\) of the way there and then stopped to get ice cream from an ice cream truck driving by. How far did she travel before she stopped to get ice cream? 

Possible Answers:

\(\displaystyle \frac{8}{27}\text{ of a mile}\)

\(\displaystyle \frac{4}{27}\text{ of a mile}\)

\(\displaystyle \frac{12}{26}\text{ of a mile}\)

\(\displaystyle \frac{12}{27}\text{ of a mile}\)

\(\displaystyle \frac{4}{26}\text{ of a mile}\)

Correct answer:

\(\displaystyle \frac{12}{27}\text{ of a mile}\)

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". \(\displaystyle \frac{2}{3}\) of the way to her friends house she stopped. 

We know that her friend lives \(\displaystyle \frac{6}{9}\) of a mile away from her so we can set up our multiplication problem. 

\(\displaystyle \frac{2}{3}\times\frac{6}{9}\)

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 27

We make the area model \(\displaystyle 9\) by \(\displaystyle 3\) 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).  

\(\displaystyle \frac{2}{3}\times\frac{6}{9}=\frac{12}{27}\)

Example Question #66 : Interpret The Product (A/B) × Q As A Part Of A Partition Of Q Into B Equal Parts: Ccss.Math.Content.5.Nf.B.4a

Virginia lives \(\displaystyle \frac{5}{9}\) of a mile away from her friend's house. She walked \(\displaystyle \frac{2}{3}\) of the way there and then stopped to get ice cream from an ice cream truck driving by. How far did she travel before she stopped to get ice cream? 

Possible Answers:

\(\displaystyle \frac{3}{26}\text{ of a mile}\)

\(\displaystyle \frac{3}{27}\text{ of a mile}\)

\(\displaystyle \frac{10}{27}\text{ of a mile}\)

\(\displaystyle \frac{7}{26}\text{ of a mile}\)

\(\displaystyle \frac{7}{27}\text{ of a mile}\)

Correct answer:

\(\displaystyle \frac{10}{27}\text{ of a mile}\)

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". \(\displaystyle \frac{2}{3}\) of the way to her friends house she stopped. 

We know that her friend lives \(\displaystyle \frac{5}{9}\) of a mile away from her so we can set up our multiplication problem. 

\(\displaystyle \frac{2}{3}\times\frac{5}{9}\)

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 27

We make the area model \(\displaystyle 9\) by \(\displaystyle 3\) 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).  

\(\displaystyle \frac{2}{3}\times\frac{5}{9}=\frac{10}{27}\)

Example Question #67 : Interpret The Product (A/B) × Q As A Part Of A Partition Of Q Into B Equal Parts: Ccss.Math.Content.5.Nf.B.4a

Kenzie lives \(\displaystyle \frac{5}{9}\) of a mile away from her friend's house. She walked \(\displaystyle \frac{1}{3}\) of the way there and then stopped to get ice cream from an ice cream truck driving by. How far did she travel before she stopped to get ice cream? 

Possible Answers:

\(\displaystyle \frac{4}{26}\text{ of a mile}\)

\(\displaystyle \frac{6}{27}\text{ of a mile}\)

\(\displaystyle \frac{6}{26}\text{ of a mile}\)

\(\displaystyle \frac{7}{26}\text{ of a mile}\)

\(\displaystyle \frac{5}{27}\text{ of a mile}\)

Correct answer:

\(\displaystyle \frac{5}{27}\text{ of a mile}\)

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". \(\displaystyle \frac{1}{3}\) of the way to her friends house she stopped. 

We know that her friend lives \(\displaystyle \frac{5}{9}\) of a mile away from her so we can set up our multiplication problem. 

\(\displaystyle \frac{1}{3}\times\frac{5}{9}\)

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 27

We make the area model \(\displaystyle 9\) by \(\displaystyle 3\) 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).  

\(\displaystyle \frac{1}{3}\times\frac{5}{9}=\frac{5}{27}\)

Example Question #68 : Interpret The Product (A/B) × Q As A Part Of A Partition Of Q Into B Equal Parts: Ccss.Math.Content.5.Nf.B.4a

Elsie lives \(\displaystyle \frac{4}{9}\) of a mile away from her friend's house. She walked \(\displaystyle \frac{1}{3}\) of the way there and then stopped to get ice cream from an ice cream truck driving by. How far did she travel before she stopped to get ice cream? 

Possible Answers:

\(\displaystyle \frac{5}{27}\text{ of a mile}\)

\(\displaystyle \frac{3}{26}\text{ of a mile}\)

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

\(\displaystyle \frac{3}{27}\text{ of a mile}\)

\(\displaystyle \frac{4}{27}\text{ of a mile}\)

Correct answer:

\(\displaystyle \frac{4}{27}\text{ of a mile}\)

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". \(\displaystyle \frac{1}{3}\) of the way to her friends house she stopped. 

We know that her friend lives \(\displaystyle \frac{4}{9}\) of a mile away from her so we can set up our multiplication problem. 

\(\displaystyle \frac{1}{3}\times\frac{4}{9}\)

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 27

We make the area model \(\displaystyle 9\) by \(\displaystyle 3\) because those are the denominators of our fractions. We shade up \(\displaystyle 1\) 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).  

\(\displaystyle \frac{1}{3}\times\frac{4}{9}=\frac{4}{27}\)

Example Question #69 : Interpret The Product (A/B) × Q As A Part Of A Partition Of Q Into B Equal Parts: Ccss.Math.Content.5.Nf.B.4a

Nina lives \(\displaystyle \frac{4}{9}\) of a mile away from her friend's house. She walked \(\displaystyle \frac{2}{3}\) of the way there and then stopped to get ice cream from an ice cream truck driving by. How far did she travel before she stopped to get ice cream? 

Possible Answers:

\(\displaystyle \frac{8}{27}\text{ of a mile}\)

\(\displaystyle \frac{9}{27}\text{ of a mile}\)

\(\displaystyle \frac{8}{25}\text{ of a mile}\)

\(\displaystyle \frac{9}{26}\text{ of a mile}\)

\(\displaystyle \frac{6}{27}\text{ of a mile}\)

Correct answer:

\(\displaystyle \frac{8}{27}\text{ of a mile}\)

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". \(\displaystyle \frac{2}{3}\) of the way to her friends house she stopped. 

We know that her friend lives \(\displaystyle \frac{4}{9}\) of a mile away from her so we can set up our multiplication problem. 

\(\displaystyle \frac{2}{3}\times\frac{4}{9}\)

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.

8 27

We make the area model \(\displaystyle 9\) by \(\displaystyle 3\) because those are the denominators of our fractions. We shade up \(\displaystyle 2\) 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).  

\(\displaystyle \frac{2}{3}\times\frac{4}{9}=\frac{8}{27}\)

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