1.
1.6,61:28=661/
2800
2.100,2:3=33,4
3.5,2×0,6=3,12
3.661/2800+33,4=33 1781/2800
4.33 1781/2800-3,12=30 289/560
2.
1. 232,323:23=10,101
2. 40,4:8=5,05
3. 0,16×125=20
4. 10,101-5,05=5,051
5. 5,051-20= -14,949
