Question

1)15/4 * 7/10

5/6 * 3/7 * 4/5

2 * 2 * 1/4

2.Odwrotnosc liczb

3,2

1.17

8.05

3.

a) 2/3 : 5/12

1 1/2 : 3/4

2/5 : 2 2/1

3 : 2 1/4

b)5/6 : 1/9

10/21 : 3 3/14

2 7/16 : 3/32

7 1/2 : 1 7/8

Answer 1

1)15/4 * 7/10=21/8=2⅝

5/6 * 3/7 * 4/5=2/7

2 * 2 * 1/4=1

 

 

2.Odwrotnosc liczb

3,2=3⅕=16/5-->5/16

1.17=117/100-->00/117

8.05=161/20-->20/161

 

 

3.

a) 2/3 : 5/12=2/3*12/5=8/5=1⅗

1 1/2 : 3/4=3/2*4/3=2

2/5 : 2 1/2=2/5:5/2=2/5*2/5=4/25

3 : 2 1/4=3:9/4=3*4/9=4/3=1⅓

 

b)5/6 : 1/9=5/6*9=15/2=7½

10/21 : 3 3/14=10/21:45/14=10/21*14/54=10/81

2 7/16 : 3/32=39/16 *32/3=26

7 1/2 : 1 7/8=15/2 : 15/8= 15/2 *8/15 =4

Answer 2

Zadanie 1.

1) 15/4 * 7/10 = 21/8

2) 5/6 * 3/7 * 4/5 = 2/7

3) 2 * 2 * 1/4 = 1

 

Zadanie 2.

3,2 = -3,2

1.17 = -1.17

8.05 = -8.05

 

Zadanie 3.

a) 2/3 : 5/12 = 8/5 = 1 3/5

1 1/2 : 3/4 = 3/2 * 4/3 = 2

2/5 : 2 2/1 = 2/5 * 1/4 = 1/10

3 : 2 1/4 = 3/1 * 4/9 = 4/3 = 1 1/3

 

b) 5/6 : 1/9 = 5/6 * 9/1 = 15/2 = 7 1/2

10/21 : 3 3/14 = 10/21 : 45/14 = 10/21 * 14/45 = 4/27

2 7/16 : 3/32 = 39/16 * 32/3 = 26

7 1/2 : 1 7/8 = 15/2 * 8/15 = 4