3.1 有理数的加法与减法姓名班级日期错题纠正课题3.1 有理数的加法与减法DP(1) (4)+(+2) (2) (5)+(+7) (3) (7)+(+11) (4) (13)+(+13) (5) (27)+(+1) (6) (+23)+(+32)(7) (37)+(128) (8) (+41)+(29)(9) (+5)+(9) (10) (+7)+(1)2、(1) (3)(+5) (2) (+7)(+3)(3) (8)(+2) (4) (+27)(+21)(5) (9)(+7) (6) (+27)(+7)(7) (9)(+9) (8) (27)(+27)(9) (8)(+5) (10) (5)(+1)3、(1)(+4)(7) (2)(3)(3)(3)(+7)(8) (4)(12)(21)(5)(+23)(24) (6)(9)(3)(7) (+8)(4) (8)(5)(7)(9)(+17)(11) (10)(3)(5)等级: