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23 January, 04:39

What is 89+27+11 using a mental math property

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  1. 23 January, 06:19
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    Everyone works differently in mental math.

    Using the property of commutativity, we can (mentally) rearrange to calculate 89+11 + 27

    Since 89+11 is exactly 100, the sum is therefore 100+27=127.
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