计算：（1）7.4-41825+535-1.28（2）7.24×35+0.6×2.41-0.65+60%（3）2.4-（0.6+3.6+1.2）×0.5（4）[1023+（327-112）×1325]÷223．

Question

计算：
（1）7.4-4(18)/(25)+5(3)/(5)-1.28
（2）7.24×(3)/(5)+0.6×2.41-0.65+60%
（3）2.4-（0.6+3.6+1.2）×0.5
（4）[10(2)/(3)+（3(2)/(7)-1(1)/(2)）×1(3)/(25)]÷2(2)/(3)．

Answer 1

（1）7.4-4(18)/(25)+5(3)/(5)-1.28
=（7.4+5(3)/(5)）-（4(18)/(25)+1.28）
=13-6
=7；
（2）7.24×(3)/(5)+0.6×2.41-0.65+60%
=0.6×（7.24+2.41）-0.65+60%
=0.6×9.65-0.65+60%
=5.79-0.65+60%
=5.14+60%
=5.74；
（3）2.4-（0.6+3.6+1.2）×0.5
=2.4-5.4×0.5
=2.4-2.7
=-0.3；
（4）[10(2)/(3)+（3(2)/(7)-1(1)/(2)）×1(3)/(25)]÷2(2)/(3)
=[10(2)/(3)+1(11)/(14)×1(3)/(25)]÷2(2)/(3)
=[10(2)/(3)+2]÷2(2)/(3)
=12(2)/(3)÷2(2)/(3)
=4(3)/(4)．