有理数的加减混合运算练习 1、计算: (1)-5-9+1; (2)10-17+2; (3)-3-4+19-10; (4)-8+12-16-22 =-13 =-5 =2 =-34 4533(5)(+3.41)-(-0.59) (6)1313 (7)—9+(—3)+3 7744=4 =2.计算: 1 =-9 7121521(1)-4.2+5.7-8.4+10; (2)6.1-3.7-4.9+1.8 (3)1 (4) 334632=11.5 =-0.7 =23 = 343.计算: (1)(—36)—(—25)—(+36)+(+72); (2)(—8)—(—3)+(+5)—(+9); =-35 =-9 1112(3)()()(); (4) 1.43.65.24.31.5; 26435= =-10.2 44.计算: (1) 13-(-18)+(-7)-15; (2)-40-28-(-19)+(-24)-(-32); =9 =-51 (3)4.7-(-8.9)-7.5+(-6); ⑷(-0.6)+1.7+(+0.6 )+(-1.7 )+(-8 ) =0.1 =-8 本文来源:https://www.wddqw.com/doc/54f4bb6abb68a98271fefa6c.html