1. Direction:
Solve each problem using
estimation and rounding off numbers.
Choose the letter of the best answer.

2. 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

3. Solution:


300
500
200
497
177
Congratulations!
You’ve got it right.

4. Sorry! !
Try to solve it again..

5. 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

6. Solution:


800
1000
200
959
 159
Congratulations!
You’ve got it right.

7. 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

8. Solution:


90
6056
 3029
Congratulations!
You’ve got it right.

9. 4. What is the correct estimation
for 148 X 75?
A. 100 X 70
B. 100 X 80
C. 200 X 80

10. Solution:
148 100
75  80
Congratulations!
You’ve got it right.

11. 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

12. Solution:


800
1000
200
989
 165
Congratulations!
You’ve got it right.