脱式计算 (75+240)÷(20-5)42+6×12-4(75+360)÷(20-5)40×(330-180)÷2528+(32÷4-3)(68+3

2025-02-25 21:11:17
推荐回答(1个)
回答1:

(1)(75+240)÷(20-5)
=315÷15
=21

(2)42+6×12-4
=42+72-4
=114-4
=110

(3)(75+360)÷(20-5)
=435÷15
=29

(4)40×(330-180)÷25
=40×150÷25
=6000÷25
=240

(5)28+(32÷4-3)
=28+(8-3)
=28+5
=33

(6)(68+32)×(96÷12)
=100×8
=800.