Seudónimo Seudónimo
  • 20-01-2017
  • Mathematics
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Greg says that he can find the sum of 40+53 without rewriting it. Explain how you can solve this problem using mental math.

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Аноним Аноним
  • 20-01-2017
are there any selections like a, b, c, or d?
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Blurryface25
Blurryface25 Blurryface25
  • 20-01-2017
you can add 40+40=80 then add the 13 left so it's 93
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