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数学简便运算提问.
64×25
1600×25
25×32×12.5
0.25×12.5÷32分之1
人气:121 ℃ 时间:2020-02-03 13:17:26
解答
64×25
=16*4*25
=16*100
=1600
1600×25
=400*4*25
=400*100
=40000
25×32×12.5
=25*4*8*12.5
=100*100
=10000
0.25×12.5÷32分之1
=0.25*12.5*32
=0.25*4*12.5*8
=1*100
=100
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