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3 years ago

Select 2 strategies that we can use to add 115+497

Mathematics

1 answer:

Gemiola [76]3 years ago

6 0

Answer:

B. Add 115+500 then subtract 3

C. Add 112+500

Step-by-step explanation:

Any strategy that gives a sum of 612 will work. Strategy A gives a sum of 602, so is not useful.

The appropriate choices are B and C.

B: 115 +497 = 115 +(500 -3) = (115 +500) -3

C: 115 +497 = 115 +497 -3 +3 = (115 -3) +(497 +3) = 112 +500

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