题目内容
脱式计算.
50-(3.6×8+2.5)
(2.9-1.8)×32+26
3.36÷[0.8×(7.6-6.9)].
50-(3.6×8+2.5)
(2.9-1.8)×32+26
3.36÷[0.8×(7.6-6.9)].
分析:根据小数四则混合运算的计算方法进行计算即可得到答案.
解答:解:50-(3.6×8+2.5)
=50-(28.8+2.5)
=50-31.3
=18.7;
(2.9-1.8)×32+26
=1.1×32+26
=35.2+26
=61.2;
3.36÷[0.8×(7.6-6.9)]
=3.36÷[0.8×0.7]
=3.36÷0.56
=6.
=50-(28.8+2.5)
=50-31.3
=18.7;
(2.9-1.8)×32+26
=1.1×32+26
=35.2+26
=61.2;
3.36÷[0.8×(7.6-6.9)]
=3.36÷[0.8×0.7]
=3.36÷0.56
=6.
点评:此题主要考查的是小数四则混合运算的计算方法的应用.
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