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4/1乘0.75-0.25乘3/8+25%乘1/8簡便計算，

4/1乘0.75-0.25乘3/8+25%乘1/8簡便計算，

4/1乘0.75-0.25乘3/8+25%乘1/8簡便計算，要過程.
1/4×0.75-0.25×3/8+25%×1/8
=1/4×（0.75-3/8+1/8）
=1/4×1/2
=1/8

13.2×5÷13.2×5+25×99簡便計算

13.2×5÷13.2×5+25×99
=（13.2÷13.2）x5x5+25x99
=25+25x99
=25x（1+99）
=25x100
=2500

簡便計算：400÷25=

400÷25
=4×100÷25
=4×4
=16

125×48×25的巧算

（125*8）*（6*25）=1000*150=150000够簡單了吧