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6 August, 10:17

Lynn wants to multiply 44 * 305. She says that all she has to do is find 4*305 and then double that number.

Which explains whether or not Lynn's method will give her the correct answer?

A.

Lynn's method will give her the correct answer.

Multiplying by 4 and then doubling the product is the same as multiplying by 44.

B.

Lynn's method will not give her the correct answer.

Multiplying by 4 and then doubling the product is the same as multiplying by 6, not by 44.

C.

Lynn's method will not give her the correct answer.

Multiplying by 4 and then doubling the product is the same as multiplying by 8, not by 44.

D.

Lynn's method will not give her the correct answer.

Multiplying by 4 and then doubling the product is the same as multiplying by 16, not by 44.

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Answers (1)
  1. 6 August, 10:43
    0
    Answer C is correct because 2 * (4*305) is the same as (2*4) * 305 and 2*4=8.
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