Unit 12 Contents

Estimation Problems

Write a division number sentence for each question below. Then estimate answers to the problems. Show how you made your estimates. Do not find an exact answer.

7. There are 165 students enrolled in the fourth grade at Wentworth School. If there are six fourth-grade classrooms, about how many students are in each class? Write your answer as a range between two numbers of students.
8. Jacob listed the following quotients to help him solve 496 ÷ 8.
   Write an estimate using his list of quotients.
9. A typical baby male gorilla weighs about 3 pounds at birth. A typical adult male gorilla can weigh about 475 pounds. About how many times heavier is an adult male gorilla than a baby male gorilla?
10. About eight times as many students from Bessie Coleman School attended the basketball game than students from James Madison School. Maya counted about 260 students at the game from Bessie Coleman. About how many students were from James Madison School?
11. Jackie baked 485 cookies for the bake sale. She wants to sell them in bags of six. She has 75 bags. Does she have enough bags?

Check-In: Questions 12–13

12. Nila has a jar with about 600 jelly beans in it. She wants to divide the jelly beans into nine shares to give out to her friends. About how many jelly beans should be in each share?
13. Ming has 425 stickers to share equally among his seven friends. About how many stickers should he give each friend?