Luttrell 2012
42
Name: ______________________
Date: _____
3e-Multiplying & Dividing Decimals
Only use your calculator to check your answer.
1. (-14.3)×(-2.1)
2. (-0.05)×(-0.05)×(-0.05)
3. -0.003 × 16.1
4. 15.2 × 5.2
5. -18.34(-1.02)
6. 0.0003(-1.2)
7. -18.46 – (-18.79) – 18.46
8. -15.37 – 14.35 + 6.2
9. -83.26 – (-15.6) +(-18.2)
10. 9.3 • 1.23
11. 0.0023 • 1.57
12. 3.14 • 2.718
Solve the following problems with the aid of a calculator.
13. Your bank account started off with $40. Over the course of the week you either put money
or took money out of your account. Here are the pile of ATM transactions: 15.50, - 4.75,
-20, 55.75. How much did you have at the end of the week?
14. Your room has dimensions of 11.23 feet by 9.56 feet. What is its perimeter and area?
15. The monkey cage at a laboratory is 5.3 feet by 5.3 feet. What is the perimeter of the cage
and it’s area?
16. A zoologist recommended that captive monkeys should have AT LEAST a cage 10 feet by
20 feet. What is its perimeter and area?
17. What is the difference in areas between the two cages in problems #15 and #16?