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计算﹙用你喜欢的方法﹚518÷5+118×150.25×1.25×32019.98×37-1
问题详情
计算﹙用你喜欢的方法﹚
参考答案
(1)518÷5+118×15,
=518×15+118×15,
=(518+118)×15,
=13×15,
=115;
(2)0.25×1.25×320,
=0.25×1.25×(40×8),
=(0.25×40)×(1.25×8),
=10×10,
=100;
(3)19.98×37-199.8×1.9+1998×0.82,
=1998×0.37-1998×0.19+1998×0.82,
=1998×(0.37-0.19+0.82),
=1998×1,
=1998;
(4)﹙16-14+13﹚×12,
=16×12-14×12+13×12,
=2-3+4,
=3;
(5)[1-﹙14+38﹚]÷34,
=[1-58]÷34,
=38÷34,
=12;
(6)[916+0÷﹙17+78﹚]×43,
=[916+0]×43,
=916×43,
=34;
(7)20-[﹙12+13﹚÷56]×1.2,
=20-[56÷56]×1.2,
=20-1×1.2,
=20-1.2,
=18.8;
(8)47×[15×﹙13-310﹚+78],
=47×[15×130+78],
=47×[12+78],
=47×118,
=1114.
考点:方法