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CoolHewen
Multiplying by 4 using the doubles strategy utilizes the fact that 4 is double of 2. Hence, 4 time any number is double of 2 times that number.

Thus, given 4 x 8, it can be evaluated using the double strategy as follows 2 x 8 + 2 x 8 = 16 + 16 = 32.

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Answer:

Here,

4 × 8 = 32

Now,

using the doubles when multiplying with 4

2 × (4 × 4)

= 2 × 16

= 32

Hence,

we use the doubles this way as by doubling the result obtained on multiplying the 4 with 4

Step-by-step explanation:

Here,

4 × 8 = 32

Now,

using the doubles when multiplying with 4

2 × (4 × 4)

= 2 × 16

= 32

Hence,

we use the doubles this way as by doubling the result obtained on multiplying the 4 with 4

or

double the number 4 i.e 2 × 4 = 8

then again double the result i.e  2 × 8 = 16

and, again double the result i.e 2 × 16 = 32 which the required answer.

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