one + two=
3
five + six=
11
three+ five=
8
six + three=
9
two+two=
4
fifteen+five=
20
ten + three=
13
twenty - nineteen=
1
five - three=
2
eight + two=
10
fifteen - one =
14
twenty - three=
17
seven + eight =
15
fourteen - seven =
7
nine + four =
12
fifteen + one=
16
