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OpenStudy (morgan_home.study):
Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5?
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OpenStudy (welshfella):
commutative property bring the 27 and 3, and 15 and 5 together;- 27 + 3 + 15 + 5 = 30 + 20 = 50
OpenStudy (mrnood):
|dw:1458305589389:dw| so the ORDER of addition is not important: What is that property called?
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