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1. |
Selena is finding 20 × 160. Explain why she can think of 20 × 160 as 2 × 10 × 16 × 10. |
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A. |
20 = 2 × 10 and 160 = 16 × 10, so 20 × 160 = 2 × 10 × 16 × 10 |
B. |
20 = 2 × 10 and 160 = 16 × 10, so 20 + 160 = 2 × 10 + 16 × 10 |
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C. |
20 = 2 × 10 and 16 = 16 × 100, so 20 × 160 = 2 × 10 × 16 × 10 |
D. |
20 = 2 + 10 and 160 = 16 + 10, so 20 × 160 = 2 + 10 × 16 + 10 |
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Hint |
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2. |
Find 32 × 34. |
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A. |
1,088 |
B. |
908 |
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C. |
948 |
D. |
916 |
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Hint |
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3. |
Find 71 × 12. |
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A. |
852 |
B. |
725 |
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C. |
825 |
D. |
752 |
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Hint |
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4. |
Find the sum. 
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A. |
804 |
B. |
823 |
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C. |
604 |
D. |
824 |
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Hint |
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5. |
Find 93 × 4. |
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A. |
364 |
B. |
362 |
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C. |
372 |
D. |
912 |
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Hint |
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6. |
Estimate. Tell whether the estimate is greater or less than the actual product.  |
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A. |
70 × 20 = 1,400; more |
B. |
60 × 10 = 600; less |
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C. |
65 × 20 = 1,300; less |
D. |
80 × 20 = 1,600; more |
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Hint |
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7. |
Estimate to choose the product.. $983 × 49 |
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A. |
$48,167 |
B. |
$74,176 |
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C. |
$84,176 |
D. |
$4,816 |
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Hint |
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8. |
Find the product. 
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A. |
$56,088 |
B. |
$55,088 |
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C. |
$62,088 |
D. |
$65,088 |
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Hint |
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9. |
Explain how to find the product of 412 and 37. |
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A. |
Multiply 412 by 7. Multiply 412 by 3 tens. Add the products. |
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B. |
Multiply 412 by 3 tens. Add 70. |
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C. |
Multiply 412 by 3. Multiply 412 by 7 tens. Add the products. |
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D. |
Multiply 412 by 7. Multiply 412 by 3. Add the products. |
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Hint |
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10. |
Find $43,005 × 96. |
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A. |
$4,228,480 |
B. |
$4,122,480 |
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C. |
$4,128,480 |
D. |
$4,828,480 |
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Hint |
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