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Sophia and Benjamin have been asked to solve 96 subtract 45.
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Sophia solves it and gets an answer of 51.
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Benjamin solves it and gets an answer of 31.
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Who is correct?
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Use the vertical column method to find out.
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Check your answer using the inverse operation.
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What number do you add to 45 to get 96?
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First, we need to find the answer to 96 take away 45.
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Six take away five is one, and nine take away four is five.
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So the answer is 51.
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So who was correct, Sophia or Benjamin?
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Sophia said 51, so she’s correct.
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Now we need to check Sophia’s answer using the inverse operation.
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In other words, what do we add to 45 to get 96?
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The question is asking us to check if 45 and 51 make 96.
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Five plus one makes six; four plus five makes nine.
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So we add 51 to 45 to make 96.
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Sophia was correct to say that 96 take away 45 is 51.
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And we checked her answer using the inverse operation and found that you need to add 51 to 45 to make 96.