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8 Cards in this Set
- Front
- Back
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To multiply or divide by any derivative of 2 |
Double the number for multiplication and halve the number for division |
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Multiply or divide by 4 |
Double the number twice for multiplication and halve twice for division |
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Multiply or divide by 5 |
To multiply by 5 divide by 2. To divide by 5 divide by 2 |
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Multiply by 9 |
Multiply the number by 10 then subtract the original number from that total |
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Multiply by 12 |
Firstly multiply the number by 10. Double the original number. Then add both numbers |
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Multiply by 15 |
Firstly multiply the number by 10. Then halve the number. Then add both numbers |
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Multiply and divide by 25 |
To multiply by 25 divide by 4. To divide by 25 multiply by 4 |
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Multiply by 75 |
Divide the number by 4 and times it by 3 |
