Multiplying with Zeros
Practice multiplying whole numbers and decimals by powers of ten and numbers ending in zero.
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Multiplying with Zeros
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Read each question carefully and follow the instructions. Show your work where necessary.
1. When you multiply a whole number by 10, you add one to the end of the number. For example, 15 x 10 = .
2. When you multiply a whole number by 100, you add zeros to the end of the number. For example, 23 x 100 = .
3. To multiply 40 x 50, you first multiply 4 x 5 = , then add the total number of from both numbers to the product. So, 40 x 50 = .
Solve each problem.
4. 35 x 10 =
5. 128 x 100 =
6. 7 x 1,000 =
7. 0.4 x 10 =
8. 2.15 x 100 =
9. 0.06 x 1,000 =
10. What is 60 x 70?
420
4,200
42,000
42
11. If you multiply 800 by 30, what is the product?
2,400
24,000
240
240,000
Solve the following word problems.
12. A factory produces 200 toys per hour. If the factory operates for 80 hours a week, how many toys are produced in a week?
13. A baker sells cookies in boxes of 10. If the baker sells 45 boxes, how many cookies did they sell in total?