Question

6.5÷0.125+3.5×8简便计算

Answer 1

6.5÷0.125+3.5×8简便计算

6.5÷0.125+3.5×8
=6.5x8+3.5x8
=（6.5+3.5）x8
=10x8
=80

(6.5一0.125)x8十47.1简便计算

(6.5一0.125)x8十47.1
=6.5*8-1/8*8+47.1
=52-1+47.1
=52+47.1
=99.1

3.5*0.125+5.5*0.125-0.125简便计算

=(3.5+5.5-1)*0.125
=8*0.125
=1

6.1×6.5+4.1×3.5简便计算

6.1×6.5+4.1×3.5
=6.1×6.5+（6.1-2）×3.5
=6.1×6.5+6.1×3.5-2X3.5
=6.1X（6.5+3.5）-7
=61-7
=54

4*3.5-6.5咋简便计算

4×3.5-6.5
=4×（2.5+1）-6.5
=4×2.5-4×1-6.5
=10+4-6.5
=14-6.5
=7.5

14.7×6.5+54.7×3.5简便计算

14.7×6.5+54.7×3.5
=14.7×（6.5+3.5）+40×3.5
=14.7×10+140
=147+140
=287

18.2 6.5-6.2-3.5简便计算

=12/5-（1/3×5/6+9/10） =12/5-9/10-5/18 =（24-9）/10-5/18 =15/10-5/18 =3/2-5/18 =（27-5）/18 =22/18 =11/9

1+2-3-4+5+6-7-8+9+10-....+2014=2015 做法：观察该式可知：数字为1到2014之间的连续正整数，运算规律是“一加一减，一减一加”，并且每组“一加一减”等于-1，每组“一减一加”等于1，正负相抵。所以原式可化简为： 1+2-3-4+5+6-7-8+9+10-....+2014 =1+（-1）+1+（-1）+1……+2014（从1到2014共2014个数字，掐头去尾，余2012个数字为偶数对，正好正负抵消仅剩头和尾） =1+2014 =2015 不知道我表述的够不够清楚……

简便计算8.2×3.5+1.8×6.5

简便计算8.2×3.5+1.8×6.5
8.2×3.5+1.8×6.5
=28.7+11.7
=40.4
直接计算

6.5十3.5除0.07简便计算

6.5+0.07/3.5
=6.5+7/350
=6.5+1/50
=6.5+2/100
=6.5+0.02
=6.52