Here are the step-by-step solutions for each problem on the worksheet.
Multiply by 10, 100 or 1000
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a. 356 x 100
When you multiply by 100, you add two zeros to the end of the number.
$356$ becomes $35,600$.
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b. 8933 x 1000
When you multiply by 1000, you add three zeros to the end of the number.
$8933$ becomes $8,933,000$.
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c. 234 x 10
When you multiply by 10, you add one zero to the end of the number.
$234$ becomes $2,340$.
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d. 1340 x 100
Multiply by 100 means adding two zeros.
$1340$ becomes $134,000$.
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e. 6529 x \_\_\_\_\_ = 652900
Compare the starting number ($6529$) with the answer ($652900$). The answer has two extra zeros at the end. This means we multiplied by $100$.
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f. \_\_\_\_\_ x 1000 = 379000
We know we multiplied by $1000$ (which adds 3 zeros) to get $379,000$. To find the starting number, remove those three zeros from the end.
$379,000$ becomes $379$.
Divide by 10, 100, 1000
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g. 560 500 ÷ 100
Dividing by 100 removes two zeros from the end of the number.
$560,500$ becomes $5,605$.
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h. 800 ÷ 100
Dividing by 100 removes two zeros.
$800$ becomes $8$.
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i. 5 330 ÷ 10
Dividing by 10 removes one zero from the end.
$5,330$ becomes $533$.
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j. 124 567 000 ÷ 1000
Dividing by 1000 removes three zeros from the end.
$124,567,000$ becomes $124,567$.
Final Answer:
a. 35 600
b. 8 933 000
c. 2 340
d. 134 000
e. 100
f. 379
g. 5 605
h. 8
i. 533
j. 124 567
Parent Tip: Review the logic above to help your child master the concept of dividing by 10 100 1000 worksheet.
