计算下面各题(能简算的要简算)(1)7.05×23.7+7.05×76.3(2)0.125×3.2×2.5(3)(12+23.1÷0.75)×0.4－5.12(4)1.6×[(12－7.2)÷(0.84÷2.1)]
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计算下面各题(能简算的要简算)(1)7.05×23.7+7.05×76.3(2)0.125×3.2×2.5(3)(12+23.1÷0.75)×0.4－5.12(4)1.6×[(12－7.2)÷(0.8
计算下面各题(能简算的要简算)(1)7.05×23.7+7.05×76.3(2)0.125×3.2×2.5(3)(12+23.1÷0.75)×0.4－5.12(4)1.6×[(12－7.2)÷(0.84÷2.1)]
计算下面各题(能简算的要简算)
(1)7.05×23.7+7.05×76.3
(2)0.125×3.2×2.5
(3)(12+23.1÷0.75)×0.4－5.12
(4)1.6×[(12－7.2)÷(0.84÷2.1)]
计算下面各题(能简算的要简算)(1)7.05×23.7+7.05×76.3(2)0.125×3.2×2.5(3)(12+23.1÷0.75)×0.4－5.12(4)1.6×[(12－7.2)÷(0.84÷2.1)]
7.05×23.7+7.05×76.3
=7.05×(23.7+76.3)
=7.05×100
=705
0.125×3.2×2.5
=(0.125×8)×(0.4×2.5)
=1×1
=1
(12+23.1÷0.75)×0.4－5.12
=(12+30.8)×0.4-5.12
=17.12-5.12
=12
1.6×[(12－7.2)÷(0.84÷2.1)]
=1.6×(4.8÷0.4)
=1.6×12
=19.2