2.250÷5×8=400

3.6×5÷2×4=60

4.30×3+8=98

5.400÷4+20×5= 200

6. 10+ 12÷3+20=34

7.(80÷20+80)÷4=2 1

8.70+( 100- 10×5)= 120

9.360÷40= 9

10.40×20= 800

1 1.80-25= 55

12.70+45= 1 15

13.90×2= 180

14. 16×6= 96

15.300×6= 1800