题目内容
计算下面各题.(能简便的要用简便方法计算)
| 800-600÷20 | 18×(537-488) | 35×18 |
| 329-186-14 | 25×37×4 | 720÷16÷5. |
(1)800-600÷20,
=800-30,
=770;
(2)18×(537-488),
=18×49,
=882;
(3)35×18,
=35×2×9,
=70×9,
=630;
(4)329-186-14,
=329-(186+14),
=329-200,
=129;
(5)25×37×4,
=(25×4)×37,
=100×37,
=3700;
(6)720÷16÷5,
=720÷(16×5),
=720÷80,
=9.
=800-30,
=770;
(2)18×(537-488),
=18×49,
=882;
(3)35×18,
=35×2×9,
=70×9,
=630;
(4)329-186-14,
=329-(186+14),
=329-200,
=129;
(5)25×37×4,
=(25×4)×37,
=100×37,
=3700;
(6)720÷16÷5,
=720÷(16×5),
=720÷80,
=9.
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