1.45415X6= 135
2.250二5X8-400
3.6X5二2X4-60
4.30X3+8-98
5.400二4420X5= 200
6.0412二3+20=34
7480二20480)二4-21
8.70+(l00-10X 5j=120
9360二40-9
1040X20-= 800
11.80-.25= 55
12.70r45=115
13.90x2=180
14.16X6-96
15300X6- 1800
16.540二9-60
1730X20= 600
18.400盖4= 100
19350.80= 270
20160+70-230
21.18.64二8-10
22.42二6t20=27
23.405X7=5
24.80+60=3-100
25.41+18二2- 50
2675-11X5- 20
27.42+7.29= 20
28.5600二80-70
2925x16= 400
30.120X25= 3000
3136X11= 396
32.1025二25=41
33.336+70= 406
3425X9X4= 900
35.200.33X3- 101
36.3020