Question

Oblicz

a) 6 : 2/3 =

8 : 2 2/3 =

5/6 : 10 =

2 1/3 : 7/8 =

b) 1/4 : 5/6=

3/4 : 6/7=

3/8 : 9/10

1 1/8 : 1 4/5=

Oblicz pamiętając o kolejności wykonywania działań.

a) 6/7 * 1 1/2 : 1 1/3 =

b) 1 3/8 : 3/4 : 1 2/9 =

c) 1 5/6 : 3 2/3 * 1 1/7 =

d) (1/2) do potęgi 3 * 2 2/3 : 1/1/6=

e) 1 1/4 * 6-3 : 1 1/5 =

f) (4 3/8 - 1 2/3) : 3 3/4=

g) 2 1/5 - 1 1/6 : 2 1/3 =

h) [(3/8 + 1/6) : 3 1/4 ] - ( 1/3) do potęgi 3 =

Klasa 6...;p

Dam naj...^^

Dzięki...;*

Answer 1

a) 6 : 2/3 = 6x 3/2 = 18/2= 9

  8 : 2 2/3 =8: 8/3= 8x 3/8 =3

  5/6 : 10 =5/6 x 1/10 = 1/12

  2 1/3 : 7/8 =7/3 : 7/8= 7/3 x 8/7= 8/3= 2 2/3

 

 b) 1/4 : 5/6=1/4 x 6/5 = 6 /20 = 3/10

  3/4 : 6/7= 3/4 x 7/6 = 7/8

  3/8 : 9/10=3/8 x 10/9 = 10/ 24 = 5/ 12 

  1 1/8 : 1 4/5= 9/8 x 5/9 = 5/8

 

 a) 6/7 * 1 1/2 : 1 1/3 =6/7 * 3/2 x 3/4 = 9/7 x 3/4 = 27/28
b) 1 3/8 : 3/4 : 1 2/9 =11/8 x 4/3 x 9/11= 12/ 24= 1/2
c) 1 5/6 : 3 2/3 * 1 1/7 =6/11 x 3/11 x 8/7 = 144/847
d) (1/2) do potęgi 3 * 2 2/3 : 1/1/6=1/8 x 8/3 x 1/6 /1 = 3 1/2
e) 1 1/4 * 6-3 : 1 1/5 =5/4 x 6 - 3 x 5/6 = 30/4 - 5/2 = 30/4 - 10/4 = 20/4 = 5
f) (4 3/8 - 1 2/3) : 3 3/4=( 4  9/24 - 1 16/24) x 4/15 = ( 3 33/24 - 1 16/24) x 4/15 = 2 17/24 x 4/15= 65 /24 x 4/15 = 65 /90 = 13/ 18 
g) 2 1/5 - 1 1/6 : 2 1/3 =2 1/5 - 7/6 x 3/7 = 2 1/5 - 1/2 = 2 2/10 - 5/10 = 1 12/10 - 5/10 = 1 7/10

Answer 2

a)6: 2/3 =6 · 3/2 =18/2=9

8: 2⅔ =8 : 8/3 =8 ·3/8=24/8=3

5/6 :10 =5/6 · 1/10 =5/60 =1/12

2⅓ : 7/8 = 7/3 : 7/8 = 7/3 · 8/7 =8/3=2⅔

b)

1/4: 5/6 = 1/4 · 6/5 =6/20=3/10 =0,3

3/4 :6/7 =3/4 · 7/6 = 21/24=7/8 

3/8 :9/10 =3/8 · 10/9 = 30/72=5/12

1 ¹/₈ :1 ⁴/₅ =9/8 : 9/5 = 9/8  · 5/9 =45/72=5/8

zad2

a)6/7·1½:1⅓ =6/7 · 3/2 : 4/3 =9/7 · 3/4 =27/28

b)1³/₈ :3/4 :1²/₉ = 11/8 :3/4 : 11/9=11/8·4/3 :11/9=11/6 ·9/11=9/6=1³/₆=1½

c)1⁵/₆:3 ⅔·1 ¹/₇=11/6 :11/3 ·8/7 =11/6· 3/11 · 8/7 =1/2 ·8/7 =8/14=4/7

d)(½)³·2⅔ :1¹/₆ =¹/₈ · 8/3 : 7/6 =1/3 · 6/7 =2/7

e)1¼·6 -3 :1¹/₅ =5/4 ·6 -3: 6/5 =30/4 - 3· 5/6 =15/2  - 5/2  =10/2=5

f)(4³/₈-1⅔):3 ¾=(35/8 -5/3):15/4 =(105/24 -40/24)· 4/15 =65/24 ·4/15=13/18

g)2¹/₅ -1¹/₆ :2⅓ =11/5 -7/6 :7/3 =11/5-7/6 · 3/7 =11/5 -1/2 =22/10-5/10=17/10

h)[(³/₈+¹/₆):3¼]-(⅓)³ =[(9/24 +4/24) :13/4 ] - 1/27 =[13/24 ·4/13] -1/27=

1/6 -1/27 =9/54  - 2/54 =7/54