(1)(284+16)×(512-8208÷18)+×+(2)6-1.19×3-0.43++÷(3)3.2×(1.5+2.5)÷1.6+14×-×(4)27.85-(

发布时间:2020-08-08 02:07:01

(1)(284+16)×(512-8208÷18)+×+
(2)6-1.19×3-0.43++÷
(3)3.2×(1.5+2.5)÷1.6+14×-×
(4)27.85-(7.85+3.4)+-×.

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解:(1)(284+16)×(512-8208÷18)+×+,
=300×(512-456)++,
=300×56++,
=16800++,
=16800;

(2)6-1.19×3-0.43++÷,
=6-3.57-0.43++,
=6-(3.57-0.43)++,
=6-4++,
=2++,
=3;

(3)3.2×(1.5+2.5)÷1.6+14×-×,
=3.2×4÷1.6+14×-×,
=8+16-,
=24-,
=23;

(4)27.85-(7.85+3.4)+-×,
=27.85-7.85-3.4+-,
=20-3.4+,
=16.6+,
=16.85.
解析分析:根据整数、分数、小数四则混合运算的顺序进行解答即可.

点评:本题考查了简单的四则混合运算,关键是理清楚运算的顺序,然后根据运算顺序逐步求解即可.
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