北师大版七年级数学上册有理数计算题精选 89.docx

1、北师大版七年级数学上册有理数计算题精选 89 6 1 8 8 (10) 3 (10) 7 21 7 5 8 ( )( ) (78) 6 (48) 8 3 5 3 3 17 8 (3)2 ( )14 2 2 7 2 12 1 1 1 1 ( ) ( )2 ( )(5 ) 3 6 2 36 6 3 1 7 9 9 (3) 7 (3) 2 6 1 9 8 ( )( ) (48) 18 (12) 8 7 9 8 8 15 7 (1)2 ( )18 9 9 2 2 21 1 1 1 6 ( ) ( )3 ( )(4 ) 3 8 2 20 2 5 1 3 3 3 (14) 1 (14) 2 4 5 7 4

2、 ( )( ) (36) 20 (30) 4 5 7 5 5 46 4 (3)2 ( )18 6 6 3 1 27 1 1 1 1 ( ) ( )2 ( )(2 ) 3 6 2 40 4 5 5 1 9 4 (8) 6 (8) 4 12 3 5 4 ( )( ) (12) 12 (60) 4 3 5 1 10 95 8 (2)3 ( )72 9 9 8 1 10 1 1 5 1 ( ) ( )2 ( )(4 ) 2 2 2 24 4 3 10 19 6 6 (13) 9 (13) 9 18 7 5 8 ( )( ) (114) 6 (39) 8 3 5 10 10 57 5 (1)2 ( )5

3、4 9 9 6 1 24 2 1 3 4 ( ) ( )2 ( )(6 ) 3 8 3 20 2 5 6 20 4 8 (19) 2 (19) 7 21 5 7 6 ( )( ) (102) 16 (39) 6 5 7 1 8 33 8 (2)2 ( )28 7 7 4 1 18 1 1 1 1 ( ) ( )3 ( )(5 ) 2 5 2 36 6 3 4 5 5 6 (3) 3 (3) 3 6 9 7 8 ( )( ) (36) 14 (36) 8 5 7 9 9 19 9 (1)2 ( )56 8 8 7 3 18 1 1 1 1 ( ) ( )2 ( )(6 ) 2 24 2 40 4

4、 5 3 5 9 9 (2) 6 (2) 2 4 1 9 2 ( )( ) (72) 20 (54) 2 7 9 1 5 55 3 (2)2 ( )36 6 6 6 2 15 1 1 1 1 ( ) ( )3 ( )(6 ) 3 6 3 12 2 3 9 1 8 2 (11) 5 (11) 8 24 1 5 2 ( )( ) (84) 2 (21) 2 3 5 1 2 92 7 (2)2 ( )24 3 3 8 2 18 2 1 3 6 ( ) ( )2 ( )(2 ) 3 18 3 40 4 5 1 13 2 6 (16) 5 (16) 4 12 5 7 4 ( )( ) (114) 20

5、(15) 4 5 7 6 6 12 2 (2)3 ( )40 5 5 8 1 14 2 1 1 4 ( ) ( )2 ( )(6 ) 2 6 3 12 2 3 7 17 9 6 (14) 4 (14) 8 16 1 5 2 ( )( ) (18) 10 (6) 2 3 5 1 7 93 3 (3)2 ( )64 8 8 8 3 10 1 1 1 1 ( ) ( )3 ( )(5 ) 2 21 2 12 2 3 5 1 8 4 (11) 4 (11) 4 12 1 5 2 ( )( ) (108) 6 (21) 2 3 5 8 1 74 1 (2)2 ( )42 7 7 6 1 8 1 1 5

6、4 ( ) ( )3 ( )(3 ) 2 3 2 40 4 5 8 20 7 6 (1) 3 (1) 7 21 7 5 8 ( )( ) (90) 8 (18) 8 3 5 3 1 85 3 (1)3 ( )36 4 4 9 2 3 1 1 3 1 ( ) ( )3 ( )(6 ) 3 8 2 20 2 5 1 3 7 3 (9) 1 (9) 2 4 5 5 6 ( )( ) (96) 14 (42) 6 3 5 6 1 88 4 (2)3 ( )45 5 5 9 2 18 2 1 1 2 ( ) ( )3 ( )(5 ) 3 18 3 24 4 3 1 19 6 5 (10) 6 (10)

7、9 18 1 7 8 ( )( ) (24) 10 (27) 8 5 7 6 4 16 3 (1)2 ( )20 5 5 4 1 8 2 1 1 6 ( ) ( )2 ( )(5 ) 2 8 3 60 6 5 1 13 9 5 (10) 2 (10) 4 12 3 7 4 ( )( ) (60) 4 (21) 4 5 7 1 1 84 1 (3)3 ( )36 4 4 9 4 15 1 1 1 6 ( ) ( )3 ( )(3 ) 3 28 2 40 4 5 1 1 3 6 (8) 4 (8) 2 6 9 7 8 ( )( ) (120) 12 (9) 8 5 7 6 1 18 5 (2)2

8、( )28 7 7 4 1 10 2 1 7 6 ( ) ( )2 ( )(6 ) 2 2 3 60 6 5 8 19 3 9 (20) 1 (20) 9 18 9 7 8 ( )( ) (78) 18 (21) 8 5 7 1 10 15 4 (2)2 ( )72 9 9 8 3 2 1 1 1 4 ( ) ( )3 ( )(2 ) 2 24 2 12 2 3 5 1 5 5 (17) 7 (17) 4 8 5 9 6 ( )( ) (66) 4 (12) 6 7 9 3 1 82 2 (2)2 ( )18 2 2 9 1 24 1 1 1 1 ( ) ( )3 ( )(5 ) 3 2 2

9、36 6 3 9 1 8 6 (17) 1 (17) 8 24 5 7 6 ( )( ) (6) 14 (51) 6 5 7 1 3 17 2 (2)3 ( )4 2 2 2 3 14 1 1 1 6 ( ) ( )3 ( )(4 ) 2 27 2 20 2 5 8 1 8 6 (18) 8 (18) 9 18 7 7 8 ( )( ) (120) 18 (57) 8 5 7 3 3 77 2 (3)2 ( )24 4 4 6 1 15 1 1 3 2 ( ) ( )3 ( )(3 ) 3 4 3 24 4 3 4 5 1 1 (7) 4 (7) 3 6 1 9 2 ( )( ) (96) 8

10、 (30) 2 7 9 10 1 15 4 (3)2 ( )18 9 9 2 1 18 2 1 1 1 ( ) ( )2 ( )(5 ) 2 6 3 12 2 3 1 1 8 1 (14) 4 (14) 2 6 3 9 4 ( )( ) (36) 18 (54) 4 7 9 1 1 83 5 (2)2 ( )72 8 8 9 4 27 2 1 1 1 ( ) ( )3 ( )(4 ) 3 20 3 40 4 5 8 15 4 8 (7) 8 (7) 7 14 7 5 8 ( )( ) (96) 4 (42) 8 3 5 1 1 18 4 (2)3 ( )6 2 2 3 1 24 1 1 1 4 ( ) ( )3 ( )(6 ) 3 8 3 24 4 3 1 9 9 2 (11) 4 (11) 4 8 1 7 2 ( )( ) (120) 2 (18) 2 5 7