Question

判断下面的计算是(√)否(×)正确。

(     ) 1. three + four －five = two
(     ) 2. five + four －three = four
(     ) 3. six + two －four = five
(     ) 4. nine + five －two = seven
(     ) 5. seven + one －four = four

Answer 1

1. √  2. ×  3. ×  4. ×  5. √