Question

Oblicz< w nawiasie będę pisac ułamki ) :

0,7-(5/8)=

(5/6)-0.8=

(7/11)+0,25=

(4/15)+0.74=

1(1/3) * 1,25=

3(11/13) * 0,26=

0,45* (9/20)=

2(1/5) / 1,21=

DAJĘ NAJ!!!

Answer 1

0,7 -5/8 = 0,7 - 0,625 = 0,075         (5/8 = 5:8 = 0,625)

0,7 - 5/8 = 7/10 - 5/8 = 28/40 - 25/40 = 3/40 = 0,075

 

5/6 - 0,8 = 5/6 - 4/5 = 25/30 - 24/30 = 1/30       (0,8 = 8/10=4/5)

 

7/11 + 0,25= 7/11 + 1/4 = 28/44 + 11/44 = 39/44    ( 0,25=25/100=1/4)

 

4/15 + 0,74 = 4/15 + 74/100 = 80/300 + 222/300= 302/300 = 1i2/300= 1i1/150

 

1i1/3 * 1,25= 4/3 * 1i1/4= 4/3 * 5/4= 1/3 * 5/1 = 5/3 = 1i2/3

 

3i11/13 * 0,26 = 50/13 * 26/100 = 1/1 * 2/2 = 2/2 = 1

 

0,45 *9/20 = 0,45 * 0,45 = 0,2025              (9/20 = 0,45 )

0,45 * 9/20= 9/20 * 9/20 = 81/400 = 0,2025

 

2i1/5 : 1,21 = 11/5 : 121/100 = 11/5 * 100/121 = 1/1 * 20/11= 20/11= 1i9/11