脱式计算. 300+180÷5×12 600÷(30-10)+5 490÷[210÷(360÷12)] 120÷24-20÷4 768÷[8

2025-06-28 03:51:34
推荐回答(1个)
回答1:

(1)300+180÷5×12
=300+36×12
=300+432
=732;

(2)600÷(30-10)+5
=600÷20+5
=30+5
=35;

(3)490÷[210÷(360÷12)]
=490÷[210÷30]
=490÷7
=70;

(4)120÷24-20÷4
=5-5
=0;

(5)768÷[8×(76-68)]
=768÷[8×8]
=768÷64
=12;

(6)130×[(600-235)÷73]
=130×[365÷73]
=130×5
=650.