# McGraw Hill My Math Grade 3 Chapter 3 Answer Key Subtraction

All the solutions provided in McGraw Hill My Math Grade 3 Answer Key PDF Chapter 3 Subtraction will give you a clear idea of the concepts.

Essential Question?
How are the operations of subtraction and addition related?
The operations of subtraction and addition are related, as they are inverse operations and if we add one number and subtract the same number they cancel each other and there will be no effect on the expression.

Subtract.

Question 1. 9 – 4 = 5.

Explanation:
By subtracting 4 from 9 we will get 5. Question 2. 12 – 7 = 5.

Explanation:
By subtracting 7 from 12 we will get 5. Question 3. 15 – 8 = 7.

Explanation:
By subtracting 8 from 15 we will get 7. Question 4. 11 – 6 = 5.

Explanation:
By subtracting 6 from 11 we will get 5. Question 5.
13 – 7 = ____
13 – 7 = 6.

Explanation:
By subtracting 7 from 13 we will get 6. Question 6.
10 – 6 = ____
10 – 6 = 4.

Explanation:
By subtracting 6 from 10 we will get 4. Question 7.
9 – 6 = ___
9 – 6 = 3.

Explanation:
By subtracting 6 from 9 we will get 3. Question 8.
16 – 8 = ___
16 – 8 = 8.

Explanation:
By subtracting 8 from 16 we will get 8. Use the base-ten blocks to find each difference.

Question 9. 24 – 11 = ____
24 – 11 = 13.

Explanation:
By subtracting 11 from 24 we will get 24-11 = 13. Question 10. 65 – 24 = ____
65 – 24 = 41.

Explanation:
By subtracting 24 from 65 we will get 65-24 = 41. Round to the nearest ten.

Question 11.
454 ____
450.

Explanation:
By rounding 454 to the nearest ten it will be 450.

Question 12.
689 ____
690.

Explanation:
By rounding 689 to the nearest ten it will be 690.

Question 13.
712 ___
710.

Explanation:
By rounding 712 to the nearest ten it will be 710.

Round to the nearest hundred.

Question 14.
377 ___
400.

Explanation:
By rounding 377 to the nearest hundred it will be 400.

Question 15.
409 ____
400.

Explanation:
By rounding 409 to the nearest ten it will be 400.

Question 16.
1,335 ____
1,300.

Explanation:
By rounding 1,335 to the nearest ten it will be 1,300.

My Math Words

Review Vocabulary

equal equals sign (=) estimate
minus sign (-) plus sign (+) subtract
subtraction sentence sum

Making Connections
Use the review vocabulary to complete the Venn diagram.  My Vocabulary Cards  Ideas for Use

• Write a tally mark on each card every time you read the word in this chapter or use it in your writing. Challenge yourself to use at least 10 tally marks for each word card.
• Use the blank cards to write your own vocabulary cards.

To use place value to exchange equal amounts when renaming a number.
The prefix re- can mean “again”. Write two other math words that use the prefix re-.

Operations that undo each other.
Inverse can mean “opposite.” How can this help you remember the meaning of inverse operations? My Foldable Foldables
Study Organizer

There are 5,395 men and women in a rase.
There are 2,697 men.
How many runners are women? The number of runner women is 2,698.

Explanation:
Given that there are 5,395 men and women in a rase and there are 2,697 men. So the number of runners are women is 5,395-2,697 which is 2,698 women.

The school’s lacrosse game was attended by 244 students and 117 parents.
To the nearest ten, about how many more students attended the game? The number of students who attended the game is 120 students.

Explanation:
Given that the school’s lacrosse game was attended by 244 students and 117 parents. As we need to round off to the nearest ten, so 240-120 which is 120 students. So the number of students who attended the game is 120 students.

On Saturday, there were 1,000 balloons at a hot air balloon festival. On sunday, there were 752 balloons. How many more balloons were there on saturday than on Sunday? The number of balloons on Saturday than on Sunday is 248 balloons.

Explanation:
Given that there are 1,000 balloons at a hot air balloon festival and on Sunday, there were 752 balloons. So the number of balloons on Saturday than on Sunday is 1,000-752 which is 248 balloons.

There were 381 students who voted for a field trip to the aquarium and 125 students who voted for a field trip to the museum. How many more students voted for the aquarium? 