Unit 12 Contents

Solve these division problems. Check your answers by using a calculator.

1. 6 ÷ 2
   60 ÷ 2
   600 ÷ 2
   6000 ÷ 2
   60,000 ÷ 2
2. 9 ÷ 3
   90 ÷ 3
   900 ÷ 3
   9000 ÷ 3
   90,000 ÷ 3
3. 12 ÷ 3
   120 ÷ 3
   1200 ÷ 3
   12,000 ÷ 3
   120,000 ÷ 3
4. 40 ÷ 5
   400 ÷ 5
   4000 ÷ 5
   40,000 ÷ 5
   400,000 ÷ 5
1. 60 ÷ 30
   600 ÷ 30
   600 ÷ 300
   6000 ÷ 30
   6000 ÷ 300
2. 90 ÷ 10
   900 ÷ 10
   900 ÷ 100
   9000 ÷ 10
   9000 ÷ 100
3. 240 ÷ 40
   2400 ÷ 40
   2400 ÷ 400
   24,000 ÷ 40
   24,000 ÷ 400
4. 450 ÷ 5
   4500 ÷ 50
   4500 ÷ 500
   45,000 ÷ 50
   45,000 ÷ 500
3. Show or tell how you solved the problems in Question 2C. If you used a rule, describe how the rule works.

Check-In: Questions 4–7

Solve the problems in Questions 4–7. Write a number sentence to show how you found your answers.

4. A high school has 5 computer labs. The school bought 250 computers. If each computer lab will get the same number of computers, how many new computers will each lab get?
5. Luis's older sister has to write a paper for school that is 6000 words. If 300 words fit on a page, how many pages should the paper be?
6. Linda used a stopwatch to measure the time she spent walking to and from school each day. In one week she walked a total of 240 minutes. How many hours did she spend walking to and from school that week?


1. Katy's Catering Company is setting up for a large dinner with 70 tables. Katy ordered 420 balloons to use for centerpieces on each of the tables. How many balloons can Katy use for each centerpiece?
2. Eight people will sit at each table. How many people can be served at the dinner?