ISEE Lower Level Quantitative : How to subtract

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

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Example Questions

Example Question #8 : Using Subtraction Within 100 To Solve Word Problems

Joe has  total math problems to complete for homework this week. He wants to get  done today. How many will he have left after today? 

Possible Answers:

Correct answer:

Explanation:

This is a subtraction problem because we want to know how many homework problems Joe will have left after he completes some of them. We take the total number of problems that he has and subtract the number that he plans to do tonight.

Example Question #11 : Using Subtraction Within 100 To Solve Word Problems

Lisa has  birthday parties to go to this year. She has already gone to  of them. How many parties does she have left to go to this year? 

Possible Answers:

Correct answer:

Explanation:

This is a subtraction problem because we want to know how many birthday parties Lisa has left to attend this year. We take the total number of parties that she is invited to, and subtract the number of parties that she has already been to.

Example Question #12 : Using Subtraction Within 100 To Solve Word Problems

A large pizza has  slices. If we eat  slices, how many will be left? (9)

Possible Answers:

Correct answer:

Explanation:

This is a subtraction problem because we want to know how many slices of pizza are left over after we have eaten some of the slices. We start with the number of silces that we started with, and subtract the number of slices that we have eaten. .

Example Question #1 : Using Subtraction Within 100 To Solve Word Problems

Mr. Bell has  desks in his classroom, but he only needs  desks because he has  students. How many extra desks does he have? 

Possible Answers:

Correct answer:

Explanation:

This is a subtraction problem because we want to know how many desks are left over after all of Mr. Bell’s class sits at a desk. We take the number of desks in his room, and subtract the number of students that he has.

Example Question #51 : How To Subtract

The pet store has  goldfish in a tank. A teacher bought  goldfish for her school’s fish tank. How many goldfish does the pet store have left? 

Possible Answers:

Correct answer:

Explanation:

This is a subtraction problem because we want to know how many goldfish the pet store has left over after the teacher buys the first and takes them away from the store. We take the number of goldfish that the store had and then subtract the number that the teacher bought. .

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