3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×101怎么简便
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3.1×1.2×0.5(2.5-0.25)×0.45.6×3.1×1.2×0.5(2.5-0.25)×0.45.6×101怎么简便3.1×1.2×0.5(2.5-0.25)×0.45.6×3.1×1.
3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×101怎么简便
3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×
3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×101怎么简便
3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×101怎么简便
1、3.1x(1.2x0.5)=3.1x0.6=1.88
2、2.5x0.4+0.25x0.4=1+0.1=1.1
3、5.6x100+5.6x1=560+5.6=565.6
3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×3.1×1.2×0.5 (2.5-0.25)×0.4 5.6×101怎么简便
2.5*3.1*1.2 简便计算
2.5×3.1×1.2(简便脱式计算)
3.1*1.2*0.5如何简便计算?
1.2.5^1.3比2.5的平方 2.0.8^-0.3比0.8^-0.5 3.1.8^0.6比0.9^3.1一共有三道题 都是比较大小关系
(1.2-2x)/0.2-(1.5-2.5x)/0.5-(3x-5)/4=0.急
1、75.6-35.6/0.89 2、2.5*3.1*1.2 3、(80.75/8.5+7.75)*3.2 4、25.8+3.76*0.5 5、10.8+32*2.5-10.8
用简便方法计算下面各题 3.1*1.2*0.5
(1.2-2x)/0.2-(1.5-2.5x)/0.5=(3x-5)/4+1/2怎么做
5除以2等于2.5,5乘与0.5等于2.5、6/0.2=1.2 6/5=1.2 8/4=2 8*0,25=2 16/8=2 16*0,125=2有何规律
3.01×0.5= 1.4×0.2×2= 1.2×0.2+0.5=
0.2分之1.2x+1-0.5分之x=1
3.2+x=4.6 x-2.08=5.76 1.2x=0.84 3x+0.5x=4.2 4x-2.16=1.2 x-0.2x=16 2x-4*2.5=3.6 x除以5.4=0.26
1.2x+2.5=1.7x-1 7x-3.1+1=11x-40 = = 解方程1.2x+2.5=1.7x-1和7x-3.1+1=11x-40
1.5+(—3.2)+(—0.5)+1+(-0.2)+(-0.2)+(-2.5)等于多少?
解方程组.0.5y-0.2x=1.2,0.3y-0.6=-0.2x
【潜能开发题】巧思妙算!0.5×0.8×0.2×1.25×0.4×2.5 0.75×4.3+2.5×0.43
36.9-10.47+3.1+0.53 2.5*3.2*1.25 9.9*34 3.12+3.12*99 3.12+6.88*1.2用简便方法计算