Mathematics

Mathematics, 05.09.2019 19:10, jltijinotgion121

what is the sum of 13 and 5? follow the steps to use 10 as an anchor to find the sum.
step 1: 10 + 5 = 15
step 2: since 13 is 3 more than 10, 3 more needs to be added to 15.
step 3: therefore, 13 + 5 =
8
12
18

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what is the sum of 13 and 5? follow the steps to use 10 as an anchor to find the sum.
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