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Finger [1]
3 years ago
11

How can you use doubles when multiplying with 4 to find 4x8

Mathematics
1 answer:
pshichka [43]3 years ago
4 0
4 = 2 * 2

Multiplying by 2 is the same a doubling.
Since 4 is 2 * 2, to multiply a number by 4, double the number twice.

Example:
What is 4 * 100?
Double 100 to get 200.
Double 200 to get 400.
Therefore, 4 * 100 = 400.
By doubling twice, we do the same as multiplying by 4.
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