计算下面各题,0.67×7.5,9.12×0.8 ,8.36x0.25,1.89÷0.54, 10
计算下面各题,0.67×7.5,9.12×0.8,8.36x0.25,1.89÷0.54,7.1÷0.25,0.51÷2.2简便计算。3.14x102,0.125x7.4...
计算下面各题,0.67×7.5,9.12×0.8 ,8.36x0.25,1.89÷0.54,7.1÷0.25, 0.51÷2.2
简便计算。3.14x102, 0.125x7.41x80
(3.2+0.56)÷0.8 展开
简便计算。3.14x102, 0.125x7.41x80
(3.2+0.56)÷0.8 展开
4个回答
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计算下面各题,
0.67×7.5=5.025
9.12×0.8=7.296
8.36x0.25=2.09
1.89÷0.54=3.5
7.1÷0.25=28.4
0.51÷2.2≈0.232
简便计算。
3.14x102
=3.14×100+3.14×2
=314+6.28
=320.68
0.125x7.41x80
=(0.125×80)×7.41
=10×7.41
=74.1
(3.2+0.56)÷0.8
=3.2÷0.8+0.56÷0.8
=4+0.7
=4.7
0.67×7.5=5.025
9.12×0.8=7.296
8.36x0.25=2.09
1.89÷0.54=3.5
7.1÷0.25=28.4
0.51÷2.2≈0.232
简便计算。
3.14x102
=3.14×100+3.14×2
=314+6.28
=320.68
0.125x7.41x80
=(0.125×80)×7.41
=10×7.41
=74.1
(3.2+0.56)÷0.8
=3.2÷0.8+0.56÷0.8
=4+0.7
=4.7
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0.67×7.5=5.025,
9.12×0.8 =7.296,
8.36x0.25=2.09,
1.89÷0.54=3.5,
7.1÷0.25=28.4,
0.51÷2.2=0.2318……18无限循环
简便计算。
3.14x102
=3.14×100+3.14×2
=314+6.28
=320.28,
0.125x7.41x80
=0.125×80×7.41
=10×7.41
=74.1
(3.2+0.56)÷0.8
=3.2÷0.8+0.56÷0.8
=4+0.7
=4.7
9.12×0.8 =7.296,
8.36x0.25=2.09,
1.89÷0.54=3.5,
7.1÷0.25=28.4,
0.51÷2.2=0.2318……18无限循环
简便计算。
3.14x102
=3.14×100+3.14×2
=314+6.28
=320.28,
0.125x7.41x80
=0.125×80×7.41
=10×7.41
=74.1
(3.2+0.56)÷0.8
=3.2÷0.8+0.56÷0.8
=4+0.7
=4.7
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1.08X0.8X0.27二32
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