有理数的加减乘除混合运算1、(1) 12(3)2(3) (2)34 (3) 5(1)(4)()()()() (5) 2()(6) 3(3)025(4)(1) (7)(9)0(3) (8) (2)(5)(2 000)4 2、(1)5(3)62; (2)(3)(24)(4);(3)25(4)(3); (4)87(10.6)(3)3、(1)16()(6); (2)(1428)7;(3)(1)513513; (4)0(3)(6)12(3)(8)61、(1) (3)(3)=(2)(3)(3)=(3) (3)(3) = (4) (3)(3)=2(1) (2) (3) (4) 3(1) (2) (3) 4(1)_;(2)1(10)(4.2)(1)_5、(1); (2);(3); (4)6、(1) ; (2);(3); (4)有理数的混合运算1、(1)35022()1 (2) (3)(4) -0.252()4-(-1)101(-2)2(-3)22、(1)(-6)-(+5)+(-9)+(-4)-(-9) (2) (-2)1(-4) (3)22+(2-5)1-(-5)23、(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22)