7.7 1016 7.7 12.5用递等式计算,要简便计算

2020-12-03 21:36:49 字数 2638 阅读 2589

1楼:匿名用户

7.7*1016/7.7*12.5

=1016/12.5

=10160/125

=10160/125

=2032*5/5*25

=2032/25

=2032/(100/4)

=2032*4/100

=8128/100

=81.28

8x(125-7)用递等式计算,怎么简便就怎么计算请帮我解答。谢谢!

2楼:匿名用户

用乘法分配律简算

8×(125-7)

=8×125-8×7

=1000-56

=944

3楼:橙那个青

递等式计算

=125*8-8*7

=1000-56

=944

2-5/12÷7/24+2/7 简便计算(递等式,要过程)

4楼:弯弓射雕过海岸

2-5/12÷7/24+2/7

=2-5/12x24/7+2/7

=2-10/7+2/7

=2-8/7

=6/7

5楼:匿名用户

2-5/12÷7/24+2/7

=2-5/84/24+2/7

=2-5/2016+2/7

=2-5/2016+576/2016

=2+571/2016

=2又571/2016

6楼:学习教育

2- 5 ÷ 7 + 2

12 24 7

=2- 5 ×24+ 2

12 7 7

=2-10+ 2

7 7

=2-8

7= 67

7×7÷7×7递等式

7楼:李快来

解:7x7÷7x7

=49÷7x7

=7x7

=497×7÷7×7递等式计算结果是:49

8楼:大燕慕容倩倩

原式=49/7*7=7*7=49

7.9*12.5的递等式计算法怎么做

9楼:匿名用户

7.9*12.5

=(8-0.1)*1.25

=10-1.25

=8.75

用递等式计算(能简算的要简便计算) 0.175÷0.25×4.27.52-(7.7-2.48)+32.7.3.2×(2.5+12.5)6.8×

10楼:挚爱慧莹uj卑

(1)0.175÷0.25×4

=0.7×4

=2.8

(2)27.52-(7.7-2.48)+32.7=27.52-7.7+2.48+32.7

=(27.52+2.48)+(32.7-7.7)=30+25

=55(3)3.2×(2.5+12.5)

=3.2×2.5+3.2×12.5

=0.8×(4×2.5)+0.4×(8×12.5)=0.8×10+0.4×100

=8+40

=48(4)6.8×3.7-3.7+37×0.42=6.8×3.7-3.7+3.7×4.2

=(6.8-1+4.2)×3.7

=10×3.7

=37(5)[(7.6-5.8)×0.8-1]×5.5=[1.8×0.8-1]×5.5

=[1.44-1]×5.5

=0.44×5.5

=2.42

(6)(7.8+2.2×5)÷(4-3.06)=(7.8+11)÷0.94

=18.8÷0.94=20

(5/7x4/7 4/7)÷4/7用递等式计算,怎么做?高手们,教教我好吗?

11楼:瀛洲烟雨

(5/7x4/7 +4/7)÷4/7

=(20/49+28/49)×7/4

=48/49×7/4

=12/7

递等式计算(能简便的用简便方法).12.5×(0.7×0.8)70.8-0.8×0.513-3.79+6

12楼:百度用户

(1)12.5×(0.7×0.8),

=12.5×0.8×0.7,

=10×0.7,

=7;(2)70.8-0.8×0.5,

=70.8-0.4,

=70.4;

(3)13-3.79+6.21,

=9.21+6.21,

=15.42;

(4)12.5×(40+0.7),

=12.5×8×5+12.5×0.7,

=500+8.75,

=508.75;

(5)4.12-1.78-1.22,

=4.12-(1.78+1.22),

=4.12-3,

=1.12;

(6)4.2÷0.7÷6,

=4.2÷(0.7×6),

=4.2÷4.2,=1.

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