Two-digit addition, please
21+13=?
What is 34?
39+12
What is 51?
22-11=
What is 11?
200+100=
What is 300?
400-200=
What is 200?
43+22=
What is 65?
22+38=
What is 60?
33-21=
What is 12?
213+213=
What is 426?
316-105=
What is 211?
52+37=?
What is 89?
66+25=
What is 91?
79-42=
What is 37?
350+226=
What is 576?
546-236=
What is 310?
71+17=
What is 88?
43-24=
What is 19?
87-53=
What is 34?
438+531=
What is 969?
837-542=
What is 295?
64+35
What is 99?
85-38=
What is 47?
99-67=
What is 32?
716+412=
What is 1,128?
362-135=
What is 227?