早教吧作业答案频道 -->数学-->
用简便方法计算.355+260+140+245(125+15)×899×25+2548×73+48×2732×125125×(100+8)(125×25)×435×68+35×36-4×35
题目详情
用简便方法计算. 355+260+140+245 | (125+15)×8 | 99×25+25 | 48×73+48×27 |
32×125 | 125×(100+8) | (125×25)×4 | 35×68+35×36-4×35 |
▼优质解答
答案和解析
(1)355+260+140+245
=(355+245)+(260+140)
=600+400
=1000
(2)(125+15)×8
=125×8+15×8
=1000+120
=1120
(3)99×25+25
=(99+1)×25
=100×25
=2500
(4)48×73+48×27
=48×(73+27)
=48×100
=4800
(5)32×125
=4×8×125
=4×(8×125)
=4×1000
=4000
(6)125×(100+8)
=125×100+125×8
=12500+1000
=13500
(7)(125×25)×4
=125×(25×4)
=125×100
=12500
(8)35×68+35×36-4×35
=35×(68+36-4)
=35×100
=3500
=(355+245)+(260+140)
=600+400
=1000
(2)(125+15)×8
=125×8+15×8
=1000+120
=1120
(3)99×25+25
=(99+1)×25
=100×25
=2500
(4)48×73+48×27
=48×(73+27)
=48×100
=4800
(5)32×125
=4×8×125
=4×(8×125)
=4×1000
=4000
(6)125×(100+8)
=125×100+125×8
=12500+1000
=13500
(7)(125×25)×4
=125×(25×4)
=125×100
=12500
(8)35×68+35×36-4×35
=35×(68+36-4)
=35×100
=3500
看了 用简便方法计算.355+26...的网友还看了以下:
口算.12×6=256-98=13×30=175+102=750+250=490-298=25×4 2020-04-07 …
5×0.7=0.43×5=3.6÷0.9-4=240÷37≈3.6-0.36=8.1-2.2=0. 2020-04-07 …
直接写出得数:0.5+0.4=0.90.9;1.4+2.7=4.14.1;8.2+3.7=11.9 2020-04-07 …
已知关于X的一元二次方程x^2+2(k-1)x+k^2-1=0有两个不相等的实数根已知关于x的一元 2020-05-16 …
已知圆C:(X-3)^2+(Y-4)^2=4,直线L1过定点A(1.0),若L1与圆C相切,求直线 2020-07-31 …
(x-2)^2=9(x+3)(步骤)用十字相乘法:x^2-5倍的根号2*x+83x^2-2x-1= 2020-08-03 …
5×(4+8)×125的简便方法有很多,下面错误算法是()A.原式=(5×4+8×5)×125=5× 2020-10-30 …
因式分解(1)4x^2+4x-1(2)8x^6-27x^3y^6(3)5a-8a^2+42(4)3x 2020-10-31 …
1.解下列方程组:(1){2y-1/x+1=1/4(2){3/x-1/y=5{y+1/x-3=1/2 2020-10-31 …
wps表格中,有两列数字,怎么把它们快速对应起来,例如B列:1,2,3,4,5,M列:4,2,5,3 2020-11-28 …