Question

1oblicz zamienajac ulamki zwykle na dziesietne 65,8-3/20 3,65-1 2/5 7/8-0/15 17 3/4+1,7 2,5-2/5 3 1/8-0,2 zd2 oblicz 3,6+2/3 4 1/8-1,11 2,75+2/7 0,125-1/9 3 1/3-3,3 1 1/5-0,09 zd3

Answer 1

w załączniku

Answer 2

1.

65,8 - 3/20 = 65,8 - 0,15 = 65,65

3,65 - 1 2/5 = 3,65 - 1,4 = 2,25

7/8 - 0/15 = 0,875 - 0 = 0,875   v   7/8 - 0,15 = 0,875 - 0,15 = 0,725

17 3/4 + 1,7 = 17,75 + 1,7 = 19,45

2,5 - 2/5 = 2,5 - 0,4 = 2,1

3 1/80 - 0,2 = 3,0125 - 0,2 = 2,8125

 

2.

3,6 + 2/3 = 36/10 + 2/3 = 18/5 + 2/3 = 54/15 + 10/15 = 64/15 = 4 i 4/15 = 4,2665

4 1/8 - 1,11 = 4,125 - 1,11 = 3,015

2,75 + 2/7 = 275/100 + 2/7 = 11/4 + 2/7 = 77/28 + 8/28 = 85/28 = 3 i 1/28 = 3,0375

0,125 - 1/9 = 125/1000 - 1/9 = 1/8 - 1/9 = 9/72 - 8/72 = 1/72 = 0,0138

3 1/3 - 3,3 = 10/3 - 33/10 = 100/30 - 99/30 = 1/30

1 1/5 - 0,09 = 1,2 - 0,09 = 1,11