ldcf.net
当前位置:首页 >> 2.5乘0.32乘1.25,脱式计算能简算的要简算 >>

2.5乘0.32乘1.25,脱式计算能简算的要简算

1.25x32 =1.25x8x4 =10x4 =40

(1)0.6+6×32×0.25,=0.6+(6×8)×(4×0.25),=0.6+48×1,=0.6+48,=48.6;(2) ( 4 5 + 1 4 ) ÷ 7 3 - 1 4 ,= 21 20 × 3 7 - 1 4 ,= 9 20 - 1 4 ,= 1 5 ;(3)36×( 7 9 + 1 4 - 5 6 ),=36× 7 9 +36× 1 4 -36× 5 6 ,=28+9-30,=7;...

1.25×0.4×80×2.5 =(1.25×80)×(2.5×0.4) =100×1 =100

一首歌是个居委会

2.5✘1.6✘1.25 =5

1.25x3.2x2.5 =1.25×8×0.4×2.5 =10×1 =10

(1)25×7.6×0.8,=(25×0.8)×7.6,=20×7.6,=152;(2)23.7-3.9+6.3-6.1,=(23.7+6.3)-(3.9+6.1),=30-10,=20;(3)2.5×64×1.25,=2.5×(4×8×2)×1.25,=(2.5×4)×(1.25×8)×2,=10×10×2,=200;(4)1÷(1-0.98),=1÷0.02,=50;(...

1.2*2.5+0.08*25 =1.2*2.5+0.8*2.5(一个因数扩大多少倍另一个因数缩小相同的倍数积不变) =(1.2+0.8)*2.5 =2*2.5 =5

(1)2.5×1.37×0.4,=2.5×0.4×1.37,=1×1.37,=1.37;(2)4.8×0.25,=1.2×4×0.25,=1.2×(4×0.25),=1.2×1,=1.2;(3)0.89×4.8+0.89×5.2,=0.89×(4.8+5.2),=0.89×10,=8.9;(4)101×0.78,=(100+1)×0.78,=100×0.78+1×0.78,=78+0.78...

1.93+2.7+2.07+7.3 =1.93+2.07+2.7+7.3=4+10=14 (0.25+2.5+25)*0.4=0.25*0.4+2.5*0.4+25*0.4=0.1+1+10=11.1

网站首页 | 网站地图
All rights reserved Powered by www.ldcf.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com