1.2017×
2.0.75÷
3.
4.(3-1.4 )×
5.3-
6. ×39+ ×27
7. -0.25
8.5- ×21
9.
10. 1LFr9JQWmcx8FkeJLZ7N1SWMWFwIgqmV/uJZ9FbYCSV2t1GTmfytpSWwhZ3ioL3A