1.6x7.5x1.25简便方法计算??

日期:2022-02-23 05:21:09 人气:1

1.6x7.5x1.25简便方法计算??

1.6x7.5x1.25

=0.4x4x7.5x1.25

=1.25x4x0.4x7.5

=5x0.4x7.5

=2x7.5

=15

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