有理数混合运算专题训练100题及答案

1、七年级上数学专题训练有理数混合运算100题姓名:8.9.3 21 14 74210.22 15-13x 034x-+-x(-13)x03437 372. 5 _225x±_5475 7 12 3(T 3) x (-134) m ' x (一5)223971113. 0.8 x一 + 4,8x()-2.2+ + 0.8x 此(-4-)-(-5-)+(*-)-3-117711824813. (一 16 50+3) + (2)1_A4-1)x(-15x4)6 20 5 1214. (0.5) (3 ) + 6.755 425.73()x x (-2,4)18 721915, 178

2、-87.21 + 43+ 53 127921216.3 412 号 (凸xt(-5_)7 7716. (-6) x (-4) + (-32) -(-8) 315-(l-x-+3-)-r(-l-)24 528(-9)x(1)+ (-60)-5-129、】5 8 一 1、()1 + ( )147 21422| 31 -s-10 (15) x 3、375 . _lr532 1623(213i + l)-r(-l1)x(-7) 32 loo3-2x(8-21-0.04)3 -(-0.4)x(-2.5)S13(-I)25 -(l-0.5)x-5 7 +15 (7)| + |(-243) +(246)|

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4、-r ()" x2x|-3 + 1|36.2342x(-) + (-)-r(-0.25)】8.19.20.21.22.23.24.25.26.27.37.738.(+$ + (425I *o39.50. -2,哈(T)x(-7 + 5)40. 3x(-2)3-4x(3)2+851, (-1)10x23+(-2)3241. (_o><22+(_2f+ 252. 8 2=(-4)x(-7 + 5)7530-(- + -)xt-36)4-(-5)42. -2a-(-2)2-23 + e2)3-22553. (-3)2x- + (-)-(-6)2-r40743. l4x 2 -

5、(3)2 44. (-10)+(M?-(3+31)x254. 2(10.5x4?)55.-2-xl-(+3-)3 + (+22-)3-2-xl5 3522 356. 9+5x(-3)r-2尸年 445. (-l)4-(1-0.5)xlx2-(-2)346. (-2)2003 + (-2)200257. (-5)3x2-(-6)-300-5124x(3-10)-43+50 216-(-2)x(7)二）* （一2）77. 12-4x(3-10)j(4-9)78. -5 + (-2)4-24 -r(-2)379. 24 +16 + f 2» 子(一10)80. (5 + 3-；) + (2

6、) + (3)一 381. 4-(-2)3-33(-l)31 282. -x-33x(-)2-231 283. 9 +3 + ( )x12 + 32 2 384. (-)x(-34)- -xl7- x(-6) 232323 5 ( 5585. 1 xx 2 + x2 1 7) 2 2) 786. (2)2 x (-1)3 - 3 x -1 -(-2)87. 23-32-(-4)x(-9)x088. 45x(y289, -8-3x(-|)3-(-1)490. -234-x(-)2 9391. 1 xfl2 3)292. J7)x(_5)一90r-15)2393. 42x( )+()-2-(0,2

7、5) 34(11 7 3 13、/ q(12 6 4 24 J v ，95. (-370)x(-：) + 025 x 24.5 153 25%，3 ( 396. 3 x 1 4 I 5j97.(-2)x(-5)xx(-30)98.124ix x(-l.5)xl 15 i 7 399.(1)(3)-8+1一0.04 x <3/ 100.(3 (-8)x -8-3 -15x8-758559910560,41427-10259 -1334-2-3L54 175251731834.73503-63-15 114-L noi , 2315400056i , 71 1 -8参考答案34. 41336. -2537, 一38. -139. ” 640. -524L 042. -6143. 644. 9245.46.47.48.49.505L 52.53.54.55.56.57.58.59. 60.6L62.63.64.65.7576.77.78.7%SO,81.82.K3.X4.96-A2-512112