(1)480÷6-42+7
=80-42
=38+7
=45;×.
改正:480÷6-42+7
=80-42+7
=38+7
=45;
(2)4+16÷4+16
=20÷20
=1;×.
改正:4+16÷4+16
=4+4+16
=8+16
=24;
(3)32÷8-32÷8
=4-4
=0√.
故答案为:×;×;√.
(1)480÷6-42+7
=80-42
=38+7
=45;×.
改正:480÷6-42+7
=80-42+7
=38+7
=45;
(2)4+16÷4+16
=20÷20
=1;×.
改正:4+16÷4+16
=4+4+16
=8+16
=24;
(3)32÷8-32÷8
=4-4
=0√.
故答案为:×;×;√.