22 7(3 4 2能簡便的要簡便

2021-03-17 01:29:47 字數 2670 閱讀 5867

1樓:巨集哥

=9/22÷〔2/7*7/20〕

=9/22÷1/10

=45/11

9/20÷[2/7×(3/4-2/5)]簡便運算?

2樓:陳長的路上

9/20÷[2/7×(3/4-2/5)]

=9/20÷[2/7×7/20]

=9/20÷(1/10)

=(9/20) x10

=9/2

脫式計算,能簡便的要簡便。 23/25除以(3/4+2/5) 1/7x9/13除以5/14除

3樓:瑩星

23/25÷

(3/4+2/5)

=23/25÷23/20

=23/25×20/23

=4/5

1/7×9/13÷5/14÷3/13

=1/7×9/13×14/5×13/3

=6/5

=1又1/5

15/16÷(5/12÷5/8+3/8)

=15/16÷(2/3+3/8)

=15/16÷25/24

=9/10

(2/3-1/2+1/6)÷1/24

=(2/3-1/2+1/6)×24

=16-12+4=8

能簡便的用簡便方法。(2/3一2/5)×(3/4÷4/5)=

4樓:匿名使用者

能簡便的用簡便方法。(2/3一2/5)×(3/4÷4/5)=(2/3-2/5)*(3/4*5/4)

=(2/3-2/5)*15/16

=2/3*15/16-2/5*15/16

=5/8-3/8

=2/8

=1/4

5樓:匿名使用者

(2/3一2/5)×(3/4÷4/5)

= (2/3一2/5)×3/4×5/4

=2/3×3/4×5/4-2/5×3/4×5/4=1/2×5/4-2/5×5/4×3/4

=5/8-1/2×3/4

=5/8-3/8

=1/4

2/7÷(2/5)-5/9×3/10能用簡便方法計算嗎?

6樓:樂為人師

2/7÷(2/5)-5/9×3/10能用簡便方法計算嗎?

解析:2/7÷(2/5)-5/9×3/10不能用簡便方法計算:

2/7÷(2/5)-5/9×3/10

=5/7-1/6

=23/42

7樓:美麗滴月

可以2/7*5/2-5/9*3/10

=5/7-1/6

=23/42

約為0.55

脫式計算,能簡便要簡便。 3/5×1/5÷3/5 2/7-5/8×2/7 1/4÷2/3+2/3÷

8樓:匡吉月卷翼

脫式計算,能簡便要簡便。

3/5×1/5÷3/5

=3/5÷3/5×1/5

=1/5

2/7-5/8×2/7

=(1-5/8)×2/7

=3/8×2/7

=3/28

1/4÷2/3+2/3÷4

=3/2÷4+2/3÷4

=(3/2+2/3)÷4

=13/6÷4

=13/24

1/3÷1/5+4/5

=5/3+4/5

=37/15

[1-(1/4+3/8)]÷1/4

=(1-5/8)×4

=3/8×4

=3/2

4/9×3/16+5/12

=1/12+5/12

=1/2

3/9-1/3×3/9

=(1-1/3)×1/3

=2/9

解方程1/2x÷1/4=8

1/2x=2

x=41/4x+2/3=3

1/4x=3-2/3

1/4x=7/3

x=28/3

1/3x+1/2x=5

5/6x=5

x=62/5x+1/3×6=4

2/5x=4-2

2/5x=2

x=52/7x=1/2×3/14

2/7x=3/28

x=3/8

4.5x+x=11/17

5.5x=11/17

x=2/17

x-1/12x=22

11/12x=22

x=24

7/10-(3/4-2/5)簡便計算?

9樓:匿名使用者

=14/20-15/20+8/20

=14/20+8/20-15/20

=22/20-15/20

=7/20

2又2/3÷(9/2)+2又2/3×7/9的簡便方法?

10樓:樂為人師

2又2/3÷(9/2)+2又2/3×7/9的簡便方法2又2/3÷(9/2)+2又2/3×7/9=2又2/3×2/9+2又2/3×7/9

=2又2/3×(2/9+7/9)

=2又2/3×1

=2又2/3

梯等式計算能簡便的要簡便

梯等式計算 能簡便的要簡便 4 9 3 4 9 16 3 8 4 9 3 4 4 9 9 16 4 9 3 8 1 3 1 4 1 6 1 4 36 5 6 2 3 3 36 5 6 4 6 3 36 1 2 72 1 15 2 17 15 17 1 15 15 2 17 17 15 1 2 15 ...

54157能簡便計算的要簡便計算

15 7 8 3 8 7 15 4 15 1 8 7能簡便計算的要簡便計 15 7 8 3 8 7 15 4 15 1 8 7 7 15 3 8 7 8 4 15 1 15 7 8 7 8 1 5 4 15 1 15 7 8 0 0 用簡便方法計算1 8 8 15加上7 8減去3 15 很簡單,1 ...

簡便計算能簡便就簡便,簡便計算。能簡便就簡便。

1 53.2 102 2 53.2 53.2 102 2 53.2 100 5320 2 6.4 3.9 6.4 3.9 0.13 6.4 6.4 3.9 2 0.13 3.9 2 0.13 30 2 603 5.7 0.8 5.7 5.7 5.7 0.8 1 0.8 1.25 4 2.53 0.5...