Choose the missing Maths vocabulary to complete these simpl problems. 1) Ten ten equals twenty. a)minus b) plus 2) Five five is zero. a)plus b) minus 3. Two one equals one. Minus b) plus 4)Six ten equals sixteen Plus b) minus 5) Twenty twenty is forty.
1. b) plus;
2. b) minus;
3. a) minus;
4. a) plus;
5. b) plus;
P. S. правильный ответ.