3 168-7828÷38+504

796-5040÷(630÷7)

285+(3000-372)÷36

1+5/6- 19/ 12

3x(-9)+7x(-9

(-54)x 1/6x(- 1/3)

1. 18. 1+(3-0.299÷0.23)× 1

2.(6.8-6.8×0.55)÷8.5

3.0. 12× 4.8÷0. 12×4.8

4.(3.2× 1.5+2.5)÷ 1.6 (2)3.2×( 1.5+2.5)÷ 1.6

5.6- 1.6÷4= 5.38+7.85-5.37=

6.7.2÷0.8- 1.2×5= 6- 1. 19×3-0.43=

7.6.5×(4.8- 1.2×4)= 0.68× 1.9+0.32× 1.9

8. 10. 15- 10.75×0.4-5.7

9.5.8×(3.87-0. 13)+4.2×3.74

10.32.52-(6+9.728÷3.2)×2.5

1 1.[(7. 1-5.6)×0.9- 1. 15] ÷2.5

12.5.4÷[2.6×(3.7-2.9)+0.62]

13. 12×6÷( 12-7.2)-6

14. 12×6÷7.2-6

15.33.02-( 148.4-90.85)÷2.5