Select the proper placement for parentheses to speed up the addition for the expression 4 + 6 + 5
2 answers:
Im guessing that by making 10 it will speed up the addition process so it should be
B since (6+4) = 10 then +5 =15
The answer is B becuase 6+4=10 10+5=15
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so think of it as a interger
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