问题 解答题
脱式计算.
300+180÷5×12600÷(30-10)+5490÷[210÷(360÷12)]
120÷24-20÷4768÷[8×(76-68)]130×[(600-235)÷73].
答案

(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.

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