下面各题，怎样算简便就怎样算。 37.2除以(54.7-45.4)
下面各题，怎样算简便就怎样算。 37.2除以(54.7-45.4)
37.2÷(54.7-45.4)
=37.2÷9.3
=4
[14-(0.2+6.37)]X0.15
=(14-6.57)X0.15
=7.43X0.15
=7.43X0.1+7.43X0.05
=0.743+0.3715
=1.1145
720除以15除以八计算下面各题怎样简便就怎样算
720除以15除以八计算下面各题怎样简便就怎样算
720除以15除以八
=720÷（15*8）
=720÷120
=6
37.2÷(54.7-45.4)简便
37.2÷(54.7-45.4)
=4X9.3÷9.3
=4
下面各题，怎样算简便就怎样算
1/5×8÷4/5
＝1/5×8×5/4
＝2
3/5＋1/2×4/5
＝3/5＋2/5
＝1
5/6÷2/3÷5/6
＝5/6×3/2×6/5
＝3/2
(5/6－2/3)×9/10
＝5/6×9/10－2/3×9/10
＝3/4－3/5
＝3/20
1.63+1.89-0.59+0.37
=（1.63+0.37）+（1.89-0.59）
=2+1.3
=3.3
真的看不清楚 我觉得这种题比较简单 希望比好好自己算算 然后再问 毕竟学习是给你自己学的
12.5×3.2 = 1.25*8*4=10*4=40
3.4-0.15×2.6 = 3.4-0.15*2-0.15*0.6=3.4-0.3-0.09=3.01
（6.05-3.35)÷1.5×0.9 = (6-3.3)*2/3*(1-0.1) =2.7*2/3*(1-0.1) =1.8-0.18=1.62
8.3×0.99 = 8.3*(1-0.01)= 8.3- 0.083 =8.217
（19.75-6.38)÷0.25 = (19.25-6+0.5-0.38)*4 = (13.25+0.12)*4 = 43+0.48=43.48
0.4×{1.4-（2.4-2.25）} = 0.4×(2.4-2.4+1.25）=0.4*1.25 = 0.5
看不清
