题目内容
先想好运算顺序,再计算.
| 4620+(401-438÷73) | 520×(80-720÷9) | 350-(350-350÷70) | 5580-(120×25-2991) |
(1)4620+(401-438÷73),
=4620+(401-6),
=4620+395,
=5015;
(2)520×(80-720÷9),
=520×(80-80),
=520×0,
=0;
(3)350-(350-350÷70),
=350-(350-5),
=350-345,
=5;
(4)5580-(120×25-2991),
=5580-(3000-2991),
=5580-9,
=5571.
=4620+(401-6),
=4620+395,
=5015;
(2)520×(80-720÷9),
=520×(80-80),
=520×0,
=0;
(3)350-(350-350÷70),
=350-(350-5),
=350-345,
=5;
(4)5580-(120×25-2991),
=5580-(3000-2991),
=5580-9,
=5571.
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