monkey math
2+2=?
what is 22
1+99=?
what is 100
20-5=?
what is 15
10+2=?
what is 102
999+100=?
what is 1099
1-1=?
what is 0
1+00=?
100
9999+100=?
100099
10-5=?
what is 5
1+99=?
what is:199
1+1=?
what is:2
100-10=?
what is 90
19+99=?
1999
2+2=?
what is:4
???-??=50
what is 100-50=50