1.2017×
2.0.75÷
3.
4.(3-1.4 )×
5.3-
6. ×39+ ×27
7. -0.25
8.5- ×21
9.
10. OqD48Wu7p/8qwKzFMenOiqXf+tBnwE8HYN8Q2Ww86Xd3drQusopddW/5uOdcGMQ+