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1、,有理数专项训练题答题规范示例: -17+(-4)5+(-4) 解:原式-17+(-4)(5+1)-17-24-41专训1:有理数的加减法(1) (-3)-4+(-4)-(-18) (2) (-27)+(-3)-5+(-3)+7 (3) 3+(-3)+11-16 (4) 5-18-5+(-16) (5) 9-(-20)+13-5 (6) 11-(-17)-6-18 (7) 3+13+18+19 (8) (-8)+9-(-11)-1 (9) (-14)-3+13+(-4) (10)(252)23+()+(-23) (11)(-)+(-)+(-)(12)(-37)+(-1)+40+(-2) (13
2、)(-7)+(-1.66)+(-113)+(-2.34) (14)(-6)+8+(-4)+12 (15) -4.2+5.7-8.4+10 (16)(8)+()(17) (18) (19) (20) (21) (22) 6.1-3.7-4.9+1.8 (23)2317(7)+(16) (24) -216-157+348+512-678 (25) (26.54)+(6.4)18.54+6.4 (26) 31+25+(69) (27) 0+1(1)()(+5)()+4 (28)(4)(5)+(4)3 (29)()()(+) (30)0.5(3)2.75(7) (31) (32) (33) (-)-(
3、+)-(-)-(-) (34)(-8)-(+12)-(-70)-(-8);(35) 81.26-293.8+8.74+111 (36) (-4)-3-(-0.13)-(0.33) (37) 5-4-3-7-(4-5)-6 专训2:有理数的乘除法(1)(9) (2)()(0.26) (3)(2)31(0.5)(4) (5)(13) (5)(4)(10)0.5(3) (6)()(1.8)(7) (0.25)()4(7) (8)()()() (9) (8)4()(0.75) (10)()36 (11)(36)() (12) 4(96)(0.25)(13)(1+)56 (14)25(25)25 (15
4、) (66)1()()(16)(72)+72(72)()72 (17)0(3)(7) (18)3() (19)(24)(6)(20)2(518) (21) 1(3)() (22) ()()(23)()() (24)3.5 (0.5) (25)() (26)1(1)1(7) (27)(2)4 (28)-2(-) (29)(-510)(+34)(-0.125) (30)2(-1)(-1);(31)(-81)2(-) (32)(-3)(-1)3 (33)(-)(-)(-0.75)(34)(-)(-1.5)(-) (35)24(-).专训3:有理数的乘方= (1) (2) (3) (4)(5) (6)
5、 (7) (8) (9) (10) (11) (12) (13) (14) 专训4 平方根与立方根(1)的平方根是_;(2)()2的算术平方根是_;(3)一个正数的平方根是2a1与a+2,则a=_,这个正数是_;(4)的算术平方根是_;(5)(9)2的算术平方根是_;(6)的值等于_,的平方根为_;(7)(4)2的平方根是_,算术平方根是_.(8)化简的结果是_.专训5 实数的混合运算(1) (2) (3) (4) (5) (6) ;(7) (8)12009+4(3)2+(6)(2)(9) (10) | (11) (12) (13) (14) (15)(2)3+(3)(4)2+2(3)2(2); (16)(17) (18)(19) (20)