9.9×2.3 12.5×0.8×4×0.5 2.5×0.32×1.25 5.3×10.1 简便计算,要有列式.
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9.9×2.312.5×0.8×4×0.52.5×0.32×1.255.3×10.1简便计算,要有列式.9.9×2.312.5×0.8×4×0.52.5×0.32×1.255.3×10.1简便计算,要
9.9×2.3 12.5×0.8×4×0.5 2.5×0.32×1.25 5.3×10.1 简便计算,要有列式.
9.9×2.3 12.5×0.8×4×0.5 2.5×0.32×1.25 5.3×10.1 简便计算,要有列式.
9.9×2.3 12.5×0.8×4×0.5 2.5×0.32×1.25 5.3×10.1 简便计算,要有列式.
9.9×2.3
=（10－0.1）×2.3
=10×2.3－2.3×0.1
=23－0.23
=22.77
12.5×0.8×4×0.5
=（12.5×0.8）×（4×0.5）
=10×2
=20
2.5×0.32×1.25………变一变,就简便.
=（2.5×0.4）×（0.8×1.25）
=1×1
=1
5.3×10.1………变一变,就简便
=5.3×（10＋0.1）
=5.3×10＋5.3×0.1
=53＋0.53
=53.53
12.5乘4.86乘0.4 ＝12.5*2.43*0.8 ＝（12.5*0.8）*2.43 ＝10*2.43 ＝24.3 12.5×4.86×0.4=12.5×0.4×2×2.43=10×2...
9.9×2.3 12.5×0.8×4×0.5 2.5×0.32×1.25 5.3×10.1 简便计算,要有列式.
求3.76×0.25+25.8 3.14-1.75÷2.3.53--0.48×1.2 0.8×9.5×12.5×0.2 4.8×0.25 9.9×4.2的简算
12.5×4-0.8×0.25 求巧算
1.25×17.6＋36.1÷0.8＋2.3×12.5
解方程 X-2.3=6.9 9.9X+2*5=1000 4X-2*0.8=30.4 6.2-2+2X=12.4
99.9 ×9.9（巧算） （12.5+2.5）×0.8(巧算）急死人.
简便运算：12.5*(8-0.8).2.7*4.3+5.7*2.7.0..77*99.6.18*9.9+0.618.0.25*1.25*0.8*40
4×0.8×12.5×0.2简便运算
4×0.8×2.5×12.5 简便计算
12.5*2.5*0.8*4简便拖式
8.8*(12.5*9.9)简便计算
6.93*99+6.93 12.5*3.4*0.8 4.36*99+4.36 8.7*9.9 2.5*32*0.125 全部用简便运算
简便计算 0.25*3.2*12.5 98*40.2 9.72*1.简便计算 0.25*3.2*12.5 98*40.2 9.72*1.597.2*0.85 3.11*4.231.1*0.47311*0.011 2.88*9.90.288 6.8*10.2 (0.44)*0.25 198*0.55 12.5*0.9*0.8 33.5*101-33.5 3.6*2.5 0.125*8.8 0.695*250690*0.2451*6.95 8.88*1.
能简便的用简便计算 0.24×1.2×150 0.8×0.9÷0.8×0.9 9.9×4.3 8.12×98+8.12×2 6.4×（0.125+12.5）4.2×75÷25
0.8x+3.2=7.212.5-3x=6.556.4÷x+14.8=24.21.2（x-0.64）=0.54x+12.5=3.5x7.3×2.1-0.9x=7.86递等式计算（能简则简)6.4×0.29+6.4×8.71+6.4===2.98×1.25×(4-0.8)×0.25===9.9×101-9.9===[0.68÷(3.2-3.03)+1.4]÷(6-0.6)===全部答出给一百!明
0.8*(3.2-2.3/2.3)简算
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