17 + 2 =
4 + 7 =
12+6 =
1 + 11 =
Tung has nine dolls and his father gives him three dolls. how many dolls does he have?
Van has fifteen robots and her mom gives her four robots. how many robots does she have?
Cuong has eight balls and his brother gives him two balls. how many balls does he have?
14
40
10+5=