神机妙算:(能简算的要写出简算过程)(1)(9.6-1012÷1.25)÷(113×75%)(2)14×39+34×25+264×313(3)395÷[32×(1-58)+185](4)[1110+2720÷(3112-1.125)]×923-16(5)0.125×34+18×8.25+12.5%+0.374×48+0.62
神机妙算:(能简算的要写出简算过程)
(1)(9.6-10÷1.25)÷(1×75%)
(2)×39+×25+×
(3)÷[32×(1-)+]
(4)[1+2÷(3-1.125)]×-
(5)0.125×+×8.25+12.5%+0.374×48+0.62×37.4-3.74.
答案和解析
(1))(9.6-10
÷1.25)÷(1×75%),
=(9.6-8.4)÷1,
=1.2÷1,
=1.2;
(2)×39+×25+×,
=×13+×25+×,
=(13+25+)×,
=40×,
=30;
(3)÷[32×(1-)+]
=÷[32×+]
=÷[12+]
=×,
=;
(4))[1+2÷(3-1.125)]×-
=[1+×]×-,
=[1+]×-
=×−,
=−,
=
(5)0.125×+×8.25+12.5%+0.374×48+0.62×37.4-3.74,
=×+×8.25++3.74×4.8+6.2×3.74-3.74,
=×(0.75+8.25+1)+3.74×(4.8+6.2-1),
=×10+3.74×10,
=1.25+37.4,
=38.65.
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