ldcf.net
当前位置:首页 >> 脱式计算,能简算的要简算.(要有解答过程)153÷4... >>

脱式计算,能简算的要简算.(要有解答过程)153÷4...

先算12.5*8=100*4.36=436 15.2/0.25/4=15.2*(0.25*4)=12.5

(1)17.4÷0.8÷1.25,=17.4÷(0.8×1.25),=17.4÷1,=17.4;(2)1.8÷0.2÷0.3,=1.8÷(0.2×0.3),=1.8÷0.06,=30;(3)24÷O.6+0.6÷24,=40+0.025,=40.025;(4)17.94÷3.9+5.3×0.4,=4.6+0.12,=4.72.

(1)4.75+8.4÷(9.2-6.8)=4.75+8.4÷2.4=4.75+3.5=8.25(2)1.2÷[2.5×(4.3-2.7)]=1.2÷[2.5×1.6]=1.2÷4=0.3(3)3.4×5.9+5.9×5.6+5.9=(3.4+5.6+1)×5.9=10×5.9=59

(1)17.64÷4.9+6.73=3.6+6.73=10.33(2)5.6×13.9+0.44×139=0.56×139+0.44×139=(0.56+0.44)×139=1×139=139(3)48×1.02÷3.4=48.96÷3.4=14.4(4)0.25×12.5×320=0.25×12.5×8×40=(0.25×40)×(12.5×8)=10×100=1000

960+320 ÷16—38 =960+20—38 =942

这么简单你都不会啊,还上学干嘛?

2005×2004÷4,=2005×(2004÷4),=2005×501,=2005×500+2005,=1002500+2005,=1004505.

7.2/0.25/0.4 =7.2/(0.25x0.4) =7.2/0.1 =72 如有帮助请采纳, 如对本题有疑问可追问,Good luck!

(1)12.03-22.78÷3.4,=12.03-6.7,=5.33;(2)4.78×99+4.78,=4.78×(99+1),=4.78×100,=478;(3)2.5×6.9×4,=2.5×4×6.9,=10×6.9,=69;(4)28.8÷1.2×0.6,=24×0.6,=14.4;(5)6.8+3.2÷2.5,=6.8+1.28,=8.08;(6)8.6×3.3+2.7×8.6...

原式=8/9÷(4/3-2/3) =8/9÷2/3 =8/9 ×3/2 =4/3

网站首页 | 网站地图
All rights reserved Powered by www.ldcf.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com