8.70+(100-10×5)=120

9.360÷40= 9

10.40×20= 800

11.80-25= 55

12.70+45=115

13.90×2= 180

14.16×6= 96

15.300×6= 1800

16.540÷9=60

17.30×20= 600

18.400÷4= 100

19.350-80= 270

20.160+70=230

21.18-64÷8= 10

22.42÷6+20=27

23.40-5×7= 5

24.80+60÷3=100

25.41+18÷2= 50

26.75-11×5= 20

27.42+7-29= 20

28.5600÷80=70

29.25×16= 400

30.120×25= 3000

31.36×11= 396

32.1025÷25=41

33.336+70= 406

34.25×9×4= 900

35.20__-33×3=

36.3020-0=2022

37.12×50= 600

38.25×8= 20__

39.23×11= 253

40.125÷25=5

41.420__-220__=20__0

42.220+80= 300

43.20×8×5= 800

44.600-3×20__=0

45.20+20÷2= 30

46.35-25÷5= 30

47.36+8-40= 4