简便运算47÷115+37×51116×2.28×125247.6-(147.6+67.89)(58+117)×8+917.-数学
题文
简便运算
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答案
(1)
=
=(
=1×
=
(2)16×2.28×125, =2×8×2.28×125, =(2×2.28)×(125×8), =4.56×1000, =4560; (3)247.6-(147.6+67.89), =247.6-147.6-67.89, =100-67.89, =32.11; (4)(
=
=5+
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题文
简便运算
|
答案
(1)
=
=(
=1×
=
(2)16×2.28×125, =2×8×2.28×125, =(2×2.28)×(125×8), =4.56×1000, =4560; (3)247.6-(147.6+67.89), =247.6-147.6-67.89, =100-67.89, =32.11; (4)(
=
=5+
|