计算下面各题.8470-104×657.12×4-1.12÷0.2572×(59-512)+10(16+19-112)×31-16÷512179×[(38+0.25)÷(56-59)].-数学
题文
计算下面各题. 8470-104×65 7.12×4-1.12÷0.25 72×(
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答案
(1)8470-104×65, =8470-6760, =1710; (2)7.12×4-1.12÷0.25, =28.48-4.48, =24; (3)72×(
=72×
=40-30+10, =20; (4)(
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