1 digit
1+1
what is 2
23+33
what is 56
100+400
what is 500
3000+7000
What is 10000
23+900
what is 923
3+9
what is 12
50+30
what is 80
555+333
what is 888
2033+3333
What is 5366
3000+727
What is 3727
6+7
what is 13
80+10
what is 90
534+143
What is 677
9999+1000
What is 10999
48+1000
What is 1048
8+9
what is 17
90+20
what is 110
176+111
What is 287
3928+8263
what is 12191
207+2
What is 209
9+9
wat is 18
30+60
what is 90
500+382
What is 882
8000+4444
what is 12444
528+9000
What is 9528