Unit 3 Contents

Tanya estimated that the weight of the dust from the dead skin cells of all the students in one year was 5200 pounds.

6. What two convenient numbers did Tanya use to find her estimate?

7. The product 570 8450 is between __________ and __________ .
8. The product 6250 350,200 is between __________ and __________ .
9. There are 638 students at Bessie Coleman School and 48 schools in the district. Each school has about the same number of students. Use mental math to help Irma make a reasonable estimate for the range of dead skin cells shed every minute by all the students in their district. Write down the range.
1. Estimate how many pounds of dead skin cells all the district's students would shed in a year.
2. About how many rhinoceros would it take to equal the weight of dead skin cells for all the students in the district?