99-55= how much?
is 44
21+33= how much?
is 54
22+49= how much?
is 71
16x1= how much?
is 16
66-29= how much?
is 37
75-38= how much?
is 37
4+88= how much?
is 92
4x7= how much?
is 28
4x3= how much?
is 12
41+9= how much?
is 50