脱式计算.
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| (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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