Best Answer

Doubling a number is equivalent to multiplying by 2.

Doubling twice (doubling, and then doubling the result again) is equivalent to multiplying by 4.

(Also, doubling three times is the same as multiplying by 8, doubling 4 times is the same as multiplying by 16, etc.)

Q: How you could use doubling to find the product 13 X 4?

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You could use: 2x-6 < -36

you can do 5 12 times

You could use it because it shows that its just 7 times 8 flipped!

commutative property 9X3

it any number can multiply by the same its commutative

Related questions

You cannot since there is no product of a single number!

You can use the product from 4x7 to find the product of 8x7 by doubling the answer to 4x7. The product of 4x7 is 28 and the product of 8x7 is 56 (28 doubled is also 56).

divide

since 4 is 2 times 2 just double 7 twice: 7 doubled = 14 and then 14 double = 28

it would be 36 times two

The second is half of the first.

It would seem more sensible to do the multiplication directly.

63

You could use the process of multiplication. It's just a suggestion.

you would take the answer 420 and split in half

first use 5*6=30 then add 6*1=6 the product of 6*6 is 36

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