Question

1. uzupełnij i wykonaj mnożenie

a) 1/4 kwoty 20zł to......zł 1/4*20=..........

b)1/3 kwoty 15zł.to......zł 1/3*15=

c)3/4 godziny to .......minut 3/4*60=

d)3/4m to .......cm 3/4*100=

e) 1 1/4 t to .......kg 1 1/4*1000=

2.oblicz iloczyny 1/5*15= 2/5*18= 4/5*15=

1/3*18= 1/9*18= 5/9*18=

3.uzupełnij i oblicz:

3/4*24= 4/5 liczby 15= 3/7 liczby 21 1 1/3 liczby 36

4. wykonaj mnożenie

a)7/5*11/3*1/4= b)3/7*15/7*1/2=

5. oblicz skracając jeśli to możliwe

3/4*5/6= 5/6*9/10= 1 1/3*2 1/4= 8/5*7/12= 4/7*21/24= 2 1/2*1 1/5= 4/9*7/10= 3/8*14/15= 3 1/5*1 5/6=

Answer 1

a) 5 zl

b) 5 zl

c) 40 min

d) 75 cm

e) 1250 kg

 

2.

3; 7,2 ; 12 ; 6 ; 2 ; 10

 

3.

18 ; 12 ; 9 ; 48

 

4

a) 77/60=1,28(3)

b) 45/98=0,46

 

5.

15/24=3/8 ; 45/60=3/4 ; ...

Answer 2

a) 1/4 * 20 = 5 zł

b) 1/3 * 15=5zł

c) 3/4 * 60= 45 min

d) 3/4 * 100 = 75 cm

e) 1 1/4 * 1000 = 1250 kg

 

2

1/5 * 15 = 3

2/5 * 18 = 36/5 = 7 1/5

4/5 * 15 = 12

1/3 * 18= 6

1/9 * 18 =2

5/9 * 18 = 10

 

3

3/4 * 24 = 18

4/5 * 15 = 12

3/7 * 21 = 9

1 1/3 * 36 = 4/3 * 36 = 48

 

4

a) 7/5 * 11/3 * 1/4 = 77/60 = 1 17/60

b) 3/7 * 15/7 * 1/2 = 45/98

 

5

3/4 *5/6 = 15/24

5/6 * 9/10 = 3/4

1 1/3 * 2 1/4 = 3

8/5 * 7/12 = 14/15

4/7*21/24= 3/6 = 1/2

2 1/2 * 1 1/5 = 5/2 * 6/5 = 3

4/9 * 7/10 = 28/90

3/8 * 14/15 = 7/20

3 1/5* 1 5/6 = 16/5 * 11/6 = 88/15 = 13/15