0.25×4.78 3.4×9+3.4 2.7×4.3+2.7×5.7 1.25×11×0.8 4.6×102 用简便方
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0.25×4.78 3.4×9+3.4 2.7×4.3+2.7×5.7 1.25×11×0.8 4.6×102 用简便方法计算的,
0.25×4.78×4
0.25×4.78×4
![0.25×4.78 3.4×9+3.4 2.7×4.3+2.7×5.7 1.25×11×0.8 4.6×102 用简便方](/uploads/image/z/5890870-46-0.jpg?t=0.25%C3%974.78+3.4%C3%979%EF%BC%8B3.4+2.7%C3%974.3%EF%BC%8B2.7%C3%975.7+1.25%C3%9711%C3%970.8+4.6%C3%97102+%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9)
0.25×4.78
=0.25×(4+0.78)
=0.25×4+0.25×0.78
=1+0.195
=1.195
3.4×9+3.4
=3.4×(9+1)
=3.4×10
=34
2.7×4.3+2.7×5.7
=2.7×(4.3+5.7)
=2.7×10
=27
1.25×11×0.8
=1.25×0.8×11
=1×11
=11
4.6×102
=4.6×(100+2)
=4.6×100+4.6×2
=460+9.2
=469.2
0.25×4.78×4
=0.25×4×4.78
=1×4.78
=4.78
=0.25×(4+0.78)
=0.25×4+0.25×0.78
=1+0.195
=1.195
3.4×9+3.4
=3.4×(9+1)
=3.4×10
=34
2.7×4.3+2.7×5.7
=2.7×(4.3+5.7)
=2.7×10
=27
1.25×11×0.8
=1.25×0.8×11
=1×11
=11
4.6×102
=4.6×(100+2)
=4.6×100+4.6×2
=460+9.2
=469.2
0.25×4.78×4
=0.25×4×4.78
=1×4.78
=4.78
0.25×4.78 3.4×9+3.4 2.7×4.3+2.7×5.7 1.25×11×0.8 4.6×102 用简便方
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