题目内容
脱式计算.
| (720÷8+21)×3 | 400÷[300-(260-160)] | 35×(26+27) | 320-180÷3×5. |
(1)(720÷8+21)×3,
=(90+21)×3,
=111×3,
=333;
(2)400÷[300-(260-160)],
=400÷[300-100],
=400÷200,
=2;
(3)35×(26+27),
=35×53,
=1855;
(4)320-180÷3×5,
=320-60×5,
=320-300,
=20.
=(90+21)×3,
=111×3,
=333;
(2)400÷[300-(260-160)],
=400÷[300-100],
=400÷200,
=2;
(3)35×(26+27),
=35×53,
=1855;
(4)320-180÷3×5,
=320-60×5,
=320-300,
=20.
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