Do the sums. 1) Sixteen + three = 2) one + ten = 3) Twelve + two = 4) One + five + fourteen = 5) Seven + eleven = 6) Fifteen − two =

1. Sixteen + three = \(16+3=19\).
2. One + ten = \(1+10=11\).
3. Twelve + two = \(12+2=14\).
4. One + five + fourteen = \(1+5+14=20\).
5. Seven + eleven = \(7+11=18\).
6. Fifteen − two = \(15-2=13\).

Ответ: 1) 19; 2) 11; 3) 14; 4) 20; 5) 18; 6) 13.