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| |
1. |
Use mental multiplication. 3 × 400 |
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|
A. |
12,000 |
B. |
120 |
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|
C. |
1,200 |
D. |
3,400 |
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|
Hint |
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2. |
Use mental multiplication. 100 × 24 |
| |
|
A. |
2,400 |
B. |
240 |
| |
|
C. |
24,000 |
D. |
124 |
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|
Hint |
|
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3. |
Use mental multiplication. 4 × 8,000 |
| |
|
A. |
12,000 |
B. |
3,200 |
| |
|
C. |
48,000 |
D. |
32,000 |
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|
Hint |
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4. |
Use mental multiplication. 800 × 20 |
| |
|
A. |
1,600 |
B. |
400 |
| |
|
C. |
820 |
D. |
16,000 |
| |
|
Hint |
|
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5. |
Use mental multiplication. 600 × 300 |
| |
|
A. |
180,000 |
B. |
900 |
| |
|
C. |
1,800 |
D. |
18,000 |
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|
Hint |
|
|