20.9+10.5÷(5.5-4.8)怎么简算?
20.9+10.5÷(5.5-4.8)怎么简算?
20.9+10.5÷(5.5-4.8)
=20.9+105/10*10/7
=20.9++13
=33.9
20.9+10.5除于(502-1.7)有简算吗
20.9 + 10.5/(502-1.7)
= 20.9 + 10.5/500.3
= 209/10 + 105/5003
= (209×5003+1050)/50030
= 20 + 46077 / 50030 = 20又50030分之46077.
用递等式计算 20.9+10.5÷(5-
20.9+10.5÷(5-3.5)
=20.9+10.5÷1.5
=20.9+7
=27.9
9.4×[1.28-(1.54-0.31)]
=9.4×[1.28-1.23]
=9.4×0.05
=0.47.
5.5-4.8 0.2要不要简便计算
可以简便运算。
5.5-4.8-0.2
=5.5-(4.8+0.2)
=5.5-5
=0.5
20.9+10.5÷(5.2-3.7)有什么简单的计算方法
20.9+10.5÷(5.2-3.7)
=20.9+10.5÷1.5
=20.9+7
=27.9
这题直接计算最简便
4.8×5.5-4.8x4.5简算
4.8×5.5-4.8x4.5
=4.8*(5.5-4.5)
=4.8*1
=4.8
105*4.8+10.5*40+105%*120如何简算
105*4.8+10.5*40+105%*120
=10.5×48+10.5×40+10.5×12
=10.5×(48+40+12)
=10.5×100
=1050
5.5/4.8+5.2/5.5最简算方法
5.5/4.8+5.2/5.5最简算方法
5.5/4.8+5.2/5.5
=5.5*(4.8+5.2)
=5.5*10
=55
脱式计算(1)20.9+10.5÷(5.2-3.7)(2)9/10÷【2/5+(1-10/11)】
20.9+10.5÷(5.2-3.7)
=20.9+10.5÷1.5
=20.9+7
=27.9
9/10÷【2/5+(1-10/11)】
=9/10÷(2/5+1/11)
=9/10÷27/55
=9/10×55/27
=11/6
16.9 +17.9 +18.9+ 19.9+ 20.9怎么简算
S = 16.9 +17.9 +18.9+ 19.9+ 20.9 怎么简算?
=18x5 + 0.9x5 = 90+4.5 = 94.5
因为:S = 16+17+18+19+20 + 5x0.9 = 5x18+5+0.9 = 94.5