-4 3\2, -15 3\8, -9\7
1) -4 3\2 = -5\1=-5,20
2) -15 3\8= -15,38
3\8=0,375
3) -9\7=-1 2\7 =-1,14
<span>0,72m-0,24m-0,46m=0,02m;
8,3k-4,3k+1,6k=5,6k.</span>
4001053 - 832974 = 3 168 079
50380 × 7009 = 353 113 420
5907300 : 97 = 60 900
6 1/9 - 2 7/9 = (55-25)/9 = 30/9 = 10/3 = 3 1/3