计算下面各题
（1）9.1-33.6÷5.6×1.5
（2）（0.62+7.638÷20.1）÷0.25
（3）1.8-（7.5-2.25）÷3.75
（4）2.706÷[5.3-（0.8+0.75）×2]
（5）5.6×[（10-2.4）÷7.6]÷1.6．
第1个回答 2019-02-23
（1）9.1-33.6÷5.6×1.5
=9.1-6×1.5
=9.1-9
=0.1；
（2）（0.62+7.638÷20.1）÷0.25
=（0.62+0.38）÷0.25
=1÷0.25
=4；
（3）1.8-（7.5-2.25）÷3.75
=1.8-5.25÷3.75
=1.8-1.4
=0.4；
（4）2.706÷[5.3-（0.8+0.75）×2]
=2.706÷[5.3-1.55×2]
=2.706÷[5.3-3.1]
=2.706÷2.2
=1.23；
（5）5.6×[（10-2.4）÷7.6]÷1.6
=5.6×[7.6÷7.6]÷1.6
=5.6×1÷1.6
=3.5．
=9.1-6×1.5
=9.1-9
=0.1；
（2）（0.62+7.638÷20.1）÷0.25
=（0.62+0.38）÷0.25
=1÷0.25
=4；
（3）1.8-（7.5-2.25）÷3.75
=1.8-5.25÷3.75
=1.8-1.4
=0.4；
（4）2.706÷[5.3-（0.8+0.75）×2]
=2.706÷[5.3-1.55×2]
=2.706÷[5.3-3.1]
=2.706÷2.2
=1.23；
（5）5.6×[（10-2.4）÷7.6]÷1.6
=5.6×[7.6÷7.6]÷1.6
=5.6×1÷1.6
=3.5．
