大师作文网125*8.9*0.8 2.08*99+2.08 6.8-2.78-0.22 1.6/0.25/4 5.7-1.9*0.
来源：学生作业帮 编辑：大师作文网作业帮 分类：数学作业 时间：2024/11/18 23:19:35
125*8.9*0.8 2.08*99+2.08 6.8-2.78-0.22 1.6/0.25/4 5.7-1.9*0.2/7.6 3.2*【2.1+1.95/6.5】
【想怎样简便就怎样简便】
【想怎样简便就怎样简便】
125*8.9*0.8
=（125*0.8）*8.9
=100*8.9=890
2.08*99+2.08
=2.08*（99+1）
=2.08*100
=208
6.8-2.78-0.22
=6.8-(2.78+0.22)
=6.8-3
=3.8
1.6/0.25/4
=
=1.6/(0.25*4)
=1.6/1
=1.6
5.7-1.9*0.2/7.6
=5.7-1.9*0.2*10/76
=5.7-0.38*10/76
=5.7-3.8/76
=5.7-0.05
=5.65
3.2*【2.1+1.95/6.5】
=3.2*(2.1+0.3)
=3.2*2.4
=7.68
=（125*0.8）*8.9
=100*8.9=890
2.08*99+2.08
=2.08*（99+1）
=2.08*100
=208
6.8-2.78-0.22
=6.8-(2.78+0.22)
=6.8-3
=3.8
1.6/0.25/4
=
=1.6/(0.25*4)
=1.6/1
=1.6
5.7-1.9*0.2/7.6
=5.7-1.9*0.2*10/76
=5.7-0.38*10/76
=5.7-3.8/76
=5.7-0.05
=5.65
3.2*【2.1+1.95/6.5】
=3.2*(2.1+0.3)
=3.2*2.4
=7.68
解下列方程4x-0.32+1.6=2.08 &nb
把小数化成分数：3.75 ;0.95 ;2.08 ;0.8 .
104*2.5 1.25*(4-0.8) 4.2*0.5-1.6*0.52 12.5*32*0.25 0.48*99+0
简算 5.4*2.08+56*0.208-2.08
45×2.08+1.5×37.6
45*2.08+1.5*37.6
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.
6.8减2.78减0.22加0.92的简便算法是什么
列式计算 7.25-0.87-2.13 1427-399 46×99+46 15.9-6.75+2.08
1.9×32×125×0.25 用简便计算
1.9*32*125*0.25 简便算法
1.6×0.25×12.5简便计算 33×1.03简便计算 5.6×99＋56×0.1简便计算 6.83×101－6.8