4.02+5.4+0.98 5. 17- 1.8-3.2 13.75-(3.75+6.48)

3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6- 1.8- 15.6-7.2

3.82+2.9+0. 18+9. 1 9.6+4.8-3.6 7. 14-0.53-2.47

5.27+2.86-0.66+ 1.63 13.35-4.68+2.65 73.8- 1.64- 13.8-5.36

47.8-7.45+8.8 0.398+0.36+3.64 15.75+3.59-0.59+ 14.25

66.86-8.66- 1.34 0.25× 16.2×4 ( 1.25-0. 125