有理数的加减乘除混合运算

一)计算题:(1)23+(-73)(2)(-84)+(-49)(3)7+(-2.04)(4)4.23+(-7.57)(5)(-7/3)+(-7/6)(6)9/4+(-3/2)(7)3.75+(2.25)+5/4(8)-3.75+(+5/4)+(-1.5)(二)用简便方法计算:(1)(-17/4)+(-10/3)+(+13/3)+(11/3)(2)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)(1)(+5)－(－3)+(－8)－(+3)+(－4)－(+5)；(2)(－6.55)+4－(－6.55)+(－8.1)－(－8.1)；(3）|0－5|－|(－4)－(+6)|－|(－7.5)+2－(+5.5)|；(3)(+33)×(－0.25)×(－7)×(+4)×(－0.3)；(4)－13×125－13×216+(－13)×(－301)；[|-98|+76+(-87)]-23[56+(-75)-(7)]-(8+4+3)-(-89)+|-87|-23+[-75-(7)+76]-(10+39-24)|-9.8|+(-4.6)-[8.7-(-1.3)]+(-5.4)-(-0.2)[-(-84)+46]-|-9.1|+(+1.9)[-(-90)+(-34)]-(+43)+(-57)+105+21+8/2-6-59