脱式计算256+840÷70×2200-18×5+4772+12×4-25(34+62)÷(35-19)600÷(34-30)÷15128+72÷(31-23

2024-11-17 16:20:26
推荐回答(1个)
回答1:

(1)256+840÷70×2
=256+12×2
=256+24
=280

(2)200-18×5+47
=200-90+47
=110+47
=157

(3)72+12×4-25
=72+48-25
=120-25
=95

(4)(34+62)÷(35-19)
=96÷16
=6

(5)600÷(34-30)÷15
=600÷4÷15
=150÷15
=10

(6)128+72÷(31-23)
=128+72÷8
=128+9
=137.