Question

0,2 + 3/5 =

1 (cała) 1/3 - 0,1 =

1,25 * (razy) 3/4 =

0,7: 7/9 =

(2,125 + 5/8) * (razy!) 0,8 =

Prooosze o szybką odpowiedź !!! ;))

Gwiazdka = razy - mnożenie

Answer 1

0,2 + 3/5 = 1/5 + 3/5 = 4/5

 

1 (cała) 1/3 - 0,1 = 4/3 - 1/10 = 40/30 - 3/30 = 37/30 = 1  7/30

 

1,25 * (razy) 3/4 =1,25*0,75 = 0,9375

 

0,7: 7/9 =7/10 * 9/7 = 9/10

 

(2,125 +  5/8) * (razy!) 0,8 = (2,125 + 0,625) * 0,8 = 2,75 * 0,8 = 2,2

Answer 2

0,2 + 3/5 = 2/10 + 3/5 = 2/10 + 6/10 = 8/10 = 4/5

1 (cała) 1/3 - 0,1 = 4/3 - 1/10 = 40/30 - 3/30 = 37/30 = 1 7/30

1,25 * (razy) 3/4 = 1 (cała) 1/4 * 3/4 = 5/4 * 3/4 = 15/16

0,7: 7/9 = 7/10 : 7/9 = 7/10 * 9/7 = 9/10

(2,125 +  5/8) * (razy!) 0,8 = (2 (całe) 1/8 + 5/8) * 8/10 = (17/8 + 5/8) * 8/10 = 22/8 * 8/10 = 22/10 = 2 (całe) 2/10 = 2 (całe) 1/5

Answer 3

1.0,2+3/5=0,2+0,6=0,8

2.1 1\3-0,1=1 1/3- 1/10=1 10/30- 1/10= 1 9/30=1 3/10

3.1,25*3/4= 1 3/4 * 3/4 =7/4 * 3/4= 21/16=1 5/16

4.0,7:7/9= 7/10 : 70/90=7/10*90/70=18/20=9/10 (tu nastapila odwrotnosc )

5.(2,125+5/8)*0,8=(2 1/8+5/8)*8/10=2 6/8 * 8/10=24/8 * 8/10=12/5=2  2/5