计算下面各题.能简算的要简算 35*12+3500/70 （2.8+3.85/3.5）*4.6过程······越简洁越好._数学解答

计算下面各题.能简算的要简算 35*12+3500/70 （2.8+3.85/3.5）*4.6
过程······越简洁越好.

人气：286 ℃　时间：2020-03-28 09:23:08

解答

35*12+3500/70
= 35*12 + 50
= 35*(10+2) +50
= 35*10 +35*2 +50
= 350+70+50
= 470
（2.8+3.85/3.5）*4.6
= (2.8 + 1.1)*4.6
= 3.9 *4.6
= (4-0.1 )*3.6
= 4*3.6 -0.1*3.6
= 14.4 - 0.36
= 14.04