计算下面各题(能简算的简算).200-180÷15×246.71-6.81-3.1935×15×2913÷(23-25)×35513×17+67÷13598÷[(25+110)×34].-数学
题文
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答案
(1)200-180÷15×2, =200-12×2, =200-24, =176; (2)46.71-6.81-3.19, =46.71-(6.81+3.19), =46.71-10, =36.71; (3)
=9×
=2; (4)
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题文
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答案
(1)200-180÷15×2, =200-12×2, =200-24, =176; (2)46.71-6.81-3.19, =46.71-(6.81+3.19), =46.71-10, =36.71; (3)
=9×
=2; (4)
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