0.65x0.48?
2019-11-17
展开全部
0.65x0.48=0.312看0.48可以做成0.8x0.6
=0.65x(08x06)
=(0.65 x0.8)x0.6
=0.52x 0.6
=0.312
0.48可以做成0.12x4
=0.65x(4x0.12)
=(0.65x4)x0.12
=2.6x0.12
=0.312
=0.65x(08x06)
=(0.65 x0.8)x0.6
=0.52x 0.6
=0.312
0.48可以做成0.12x4
=0.65x(4x0.12)
=(0.65x4)x0.12
=2.6x0.12
=0.312
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