Direction:

Solve each problem using

estimation and rounding off numbers.

Choose the letter of the best answer.

1. Ron and Carey bought 497 buttons where 177 were used to make some jackets. About how many buttons do they have left?

A. 700

B. 400

C. 300

Solution:

300

500

200

497

177

Congratulations!

You’ve got it right.

Sorry! !

Try to solve it again..

2. Sara and Senna went to a candy store and bought 959 pieces of candy. If 152 were bought by Sara, about how many candies did Senna bought?

A. 700

B. 800

C. 600

Solution:

800

1000

200

959

159

Congratulations!

You’ve got it right.

3. There were 56 students in Ms. Lopez class and 29 students in Mrs. Santillan’s class. Approximately how many students were there in all two classes?

A. 110

B. 90

C. 80

Solution:

90

6056

3029

Congratulations!

You’ve got it right.

4. What is the correct estimation for 148 X 75?

A. 100 X 70

B. 100 X 80

C. 200 X 80

Solution:

148 100

75 80

Congratulations!

You’ve got it right.

5. Isaac, Seth and Caleb collected 989 animal cards but 165 got lost. About how many cards do they have now?

A. 700

B. 800

C. 900

Solution:

800

1000

200

989

165

Congratulations!

You’ve got it right.