判断下列算式是否正确，正确的在括号里打“√”，错误的打“×”。( ) 1. seven －five = two
( ) 2. one + six = eight
( ) 3. four + two = six
( ) 4. ten －five = four
( ) 5. nine －one = eight1. √ 2. × 3. √ 4. × 5. √