Mathematics, 08.11.2019 20:31 angelaisthebest1700
Riley had to add this group of numbers (56 + 47 + 53), but he wanted to add them as quickly and as easily as possible. here is how he decided to add the numbers: 56 + 47 + 53 = 56 + (47 + 53) = 56 + 100 = 156. which number property allowed him to add the numbers in this way?
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Riley had to add this group of numbers (56 + 47 + 53), but he wanted to add them as quickly and as e...
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