Add
500+456
956
5-3
2
6/3
2
3x2
6
2/3×4/5
8/15
6435+123
6558
25-17
8
108/12
9
10x12
120
7/8×2/9
7/36,14/72
a+1a
2a
123-123
0
1000/(-8)
-125
500x10000
5000000
5/6×3/4
5/8
100+9075
9175
65.7-32.1
33.6
22/4
5.5
50x13
650
11/12×6/7
11/14
6000+78908
84908
9B-50B
-41B
-80/2
-40
500n*93
46500n
9/10×5/8
9/16