(数学)简便计算.3.2×0.25

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(数学)简便计算.3.2×0.25
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(数学)简便计算.3.2×0.25
(数学)简便计算.3.2×0.25

(数学)简便计算.3.2×0.25

3.2×0.25
=0.8×4×0.25
=0.8×1
=0.8

=0.8×1
=0.8

把3.2分成4和0.8
4和0.25得1,再1x0.8=0.8

3.2*0.25=0.8*4*0.25=0.8*1=0.8

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

愿对你有所帮助!