72*2.09-1.8*73.6
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72*2.09-1.8*73.6
72*2.09-1.8*73.6
72*2.09-1.8*73.6
72*2.09-1.8*73.6
=1.8*40*2.09-1.8*73.6
=1.8*(40*2.09-73.6)
=1.8*(83.6-73.6)
=1.8*10
=18
提取公因数后=18
72*2.09-1.8*73.6=18*4*2.09-18*7.36=18*8.36-18*7.36=18
72*2.09-1.8*73.6
=72*2.09-18*7.36
=18(4*2.09-7.36)
=18(8.36-7.36)
=18*1
=18
72*2.09-1.8*73.6
72*2.09-1.8*73.6怎样简便算?
72×2.09-1.8×73.6 简便运算
72*2.09减1.8*73.6要最简算法
72乘以2.09减1.8乘以73.6
1.72×2.09-1.8×73.6简算
计算题:(1)48*1.08+1.2*56.8 (2)72*2.09-1.8*73.6 (要巧算)
数学简算题4道一.45*2.08+1.5*37.6二.52*11.1+2.6*778三.48*1.08+1.2*56.8四.72*2.09-1.8*73.6
72×209-1.8×73.6的简便计算
简算 7.2×2.09-18×73.6
用渐变算法,我没有财富,对不起,但我急用,马上要交,好心帮个忙,求你们,给你们跪下48×1.08+56.8 72×2.09-1.8*73.6 4.4×57.8+45.3×5.6 3.75×735-八分之三 3.75×735-八分之三×5730+162×62.5
72÷1.8+72÷1.8怎样简算
请用简便方法计算下面各题,6.48/(1.8*0.45)/250 (3.12+0.9)/(1-0.4)0.045/【(2.1-2.09)*0.1】
3.8-2.09怎么验算?
72-3(x-1.8)=18 解方程
72*2.07-1.8*3.6 和6.8*16.8+19.3*3.2
72*2.07-1.8*3.6 和6.8*16.8+19.3*3.2
一个数的1.8倍是72,解方程