3.2×0.25×0.125 (简便计算)(写出过程)

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3.2×0.25×0.125 (简便计算)(写出过程)
3.2×0.25×0.125 (简便计算)(写出过程)

3.2×0.25×0.125 (简便计算)(写出过程)
3.2×0.25×0.125
=0.4×0.25×8×0.125
=0.1×1
=0.1

3.2×0.25×0.125
=0.4×0.25×8×0.125
=0.1

3.2×0.25×0.125=3.2*(1/4)*0.125=0.8*(1/8)=0.1

3.2×0.25×0.125
=﹙4×0.25﹚×﹙0.8×0.125﹚
=1×0.1
=0.1

3.2 * 0.25 * 0.125
=3.2 * 1/4 * 1/8
=3.2 * 1/32
=0.1


3.2=4x8x10 负一次方
0.25= 25 x 10 负二次方
0.123=125 x 10 负三次方
所以:
3.2x0.25x0.125
=(4x8x10 负一次方)x(25 x 10 负二次方)x(125 x 10 负三次方)
= (4x25)x(8x125)x10负六次方
=100x1000x 10负六次方
=...

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3.2=4x8x10 负一次方
0.25= 25 x 10 负二次方
0.123=125 x 10 负三次方
所以:
3.2x0.25x0.125
=(4x8x10 负一次方)x(25 x 10 负二次方)x(125 x 10 负三次方)
= (4x25)x(8x125)x10负六次方
=100x1000x 10负六次方
=10两次方 x 10三次方 x10负六次方
=10负一次方
=0.1

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