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4 years ago

Please help

Mathematics

1 answer:

Serhud [2]4 years ago

6 0

Answer:

<h2>No, Sandra is not correct.</h2>

Step-by-step explanation:

Sandra was needed to multiply 438 by 17.

$438\times17 = 438\times(10 + 7) = 438\times10 + 438\times7 = 4380 + 3066 = 7446$ .

17 = 10 + 7.

Sandra multiplied 438 by 1 and then multiplied 438 by 7. Sandra had taken $438\times7 = 3066$ as the answer.

Multiplying by 1 and multiplying by 10 is not same.

Sandra mistakenly multiplied 438 by 1 instead of 10.

Hence, Sandra got the wrong answer.

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Step-by-step explanation:

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