multiplication
5x20
100
100,000+200,000
300,000
1,000-10,000
-9,000
10x10x10x10x10
1,000,0m
58+402
460
559-659
-100
10x10
100
1,105+7,590
8,695
0-900,999,999,999,999,999,99
-900,999,999,999,999,999,99
1,000x2
2,000
6835+3164
9999
6217-6218
-1
5x20x5x20
2,500
748+123
871
4217-4219
-2