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递等式计算(能简算的要简算)(14-110÷2)÷31025×611+40%×51117×(
问题详情
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参考答案
(1)(14-110÷2)÷310
=(14-120)×103,
=15×103,
=23;
(2)25×611+40%×511
=25×611+25×511,
=25×(611+511),
=25×1,
=25;
(3)17×(115+217)×15
=115×15×17+217×17×15,
=17+30,
=47;
(4)45÷[(13+25)×411]
=45÷[1115×411],
=45×154,
=3;
(5)(275-1.8)÷[(1.15+1320)×53]
=(5.4-1.8)÷[(1.15+0.65)×53],
=3.6÷[1.8×53],
=3.6÷3,
=1.2.
考点:等式