北师大版七年级数学上册有理数计算题精选 121.docx

1、北师大版七年级数学上册有理数计算题精选 121 3 10 2 1 1 1 ( ) ( )3 ( )(5 ) 2 15 3 12 2 3 10 19 9 7 (9) 1 (9) 9 18 1 9 8 ( )( ) (60) 18 (45) 8 7 9 3 1 32 3 (2)2 ( )4 2 2 2 4 3 1 1 5 1 ( ) ( )2 ( )(4 ) 3 36 2 24 4 3 1 19 6 3 (4) 2 (4) 9 18 1 9 6 ( )( ) (120) 16 (54) 6 7 9 1 1 49 2 (3)3 ( )30 6 6 5 1 8 2 1 7 1 ( ) ( )3 ( )

2、(3 ) 2 4 3 36 6 3 7 1 7 4 (9) 7 (9) 8 16 1 5 6 ( )( ) (66) 8 (3) 6 3 5 1 4 69 4 (3)2 ( )25 5 5 5 1 2 2 1 1 4 ( ) ( )3 ( )(4 ) 2 9 3 36 6 3 1 5 5 5 (8) 1 (8) 2 6 9 7 8 ( )( ) (102) 2 (27) 8 5 7 8 8 62 1 (3)2 ( )63 9 9 7 1 18 2 1 1 4 ( ) ( )2 ( )(6 ) 2 2 3 40 4 5 1 17 1 1 (3) 2 (3) 9 18 7 7 8 ( )( ) (

3、78) 12 (6) 8 5 7 1 5 46 8 (3)3 ( )18 6 6 3 1 12 1 1 7 2 ( ) ( )2 ( )(2 ) 3 2 2 36 6 3 1 5 6 1 (15) 9 (15) 2 6 1 7 2 ( )( ) (24) 16 (33) 2 5 7 10 10 17 3 (1)3 ( )45 9 9 5 2 21 2 1 5 2 ( ) ( )3 ( )(3 ) 3 8 3 36 6 3 10 19 3 5 (5) 4 (5) 9 18 3 7 4 ( )( ) (72) 18 (51) 4 5 7 1 1 17 5 (3)2 ( )18 9 9 2 3 14

4、 1 1 5 1 ( ) ( )2 ( )(3 ) 2 21 3 36 6 3 1 7 7 9 (6) 2 (6) 4 8 7 9 6 ( )( ) (120) 16 (24) 6 7 9 7 9 98 5 (3)2 ( )64 8 8 8 1 18 1 1 3 2 ( ) ( )3 ( )(6 ) 3 2 3 24 4 3 1 25 4 8 (19) 4 (19) 8 24 1 5 8 ( )( ) (6) 20 (12) 8 3 5 1 4 48 2 (2)2 ( )25 5 5 5 4 27 2 1 7 6 ( ) ( )3 ( )(5 ) 3 20 3 60 6 5 5 1 1 5 (

5、1) 3 (1) 6 18 3 5 2 ( )( ) (54) 12 (45) 2 3 5 8 8 16 2 (2)3 ( )81 9 9 9 3 12 1 1 1 1 ( ) ( )2 ( )(6 ) 2 6 2 24 4 3 1 1 2 6 (5) 3 (5) 6 12 1 5 8 ( )( ) (12) 16 (21) 8 3 5 1 8 64 3 (1)2 ( )45 9 9 5 1 6 1 1 1 2 ( ) ( )2 ( )(2 ) 3 4 2 12 2 3 8 1 8 5 (6) 2 (6) 7 21 1 7 2 ( )( ) (36) 8 (60) 2 5 7 1 1 92 8

6、 (2)2 ( )24 3 3 8 4 24 1 1 1 2 ( ) ( )2 ( )(6 ) 3 28 3 36 6 3 4 1 4 2 (4) 4 (4) 3 9 7 9 8 ( )( ) (6) 4 (54) 8 7 9 4 4 38 9 (1)2 ( )6 3 3 2 1 18 1 1 1 4 ( ) ( )3 ( )(3 ) 2 8 2 20 2 5 3 1 7 3 (17) 2 (17) 4 12 7 7 6 ( )( ) (48) 20 (51) 6 5 7 3 1 14 9 (2)2 ( )36 4 4 9 1 10 1 1 5 2 ( ) ( )3 ( )(4 ) 2 5 3

7、 36 6 3 6 14 3 2 (4) 8 (4) 5 15 1 9 8 ( )( ) (108) 16 (6) 8 7 9 1 10 103 2 (1)3 ( )81 9 9 9 1 4 1 1 5 1 ( ) ( )2 ( )(2 ) 2 5 2 36 6 3 9 1 4 1 (7) 7 (7) 8 16 1 5 2 ( )( ) (36) 12 (57) 2 3 5 4 6 32 4 (3)3 ( )20 5 5 4 3 2 1 1 1 6 ( ) ( )3 ( )(6 ) 2 27 2 60 6 5 3 7 5 5 (17) 4 (17) 2 6 1 9 8 ( )( ) (12)

8、14 (27) 8 7 9 2 1 12 6 (2)2 ( )6 3 3 2 1 12 1 1 3 2 ( ) ( )2 ( )(5 ) 2 5 2 12 2 3 8 20 5 8 (18) 3 (18) 7 21 1 9 6 ( )( ) (72) 4 (24) 6 7 9 6 6 18 3 (2)3 ( )14 7 7 2 4 21 1 1 3 4 ( ) ( )2 ( )(4 ) 3 32 2 20 2 5 1 25 7 6 (19) 3 (19) 8 24 1 7 2 ( )( ) (18) 16 (12) 2 5 7 4 2 16 5 (3)2 ( )6 3 3 2 1 16 2 1

9、 7 4 ( ) ( )3 ( )(3 ) 2 7 3 60 6 5 1 5 2 5 (14) 5 (14) 2 6 5 9 6 ( )( ) (54) 16 (27) 6 7 9 4 4 76 8 (3)3 ( )24 3 3 8 1 18 1 1 1 4 ( ) ( )2 ( )(5 ) 2 3 2 20 2 5 2 10 5 5 (19) 3 (19) 3 9 7 5 8 ( )( ) (36) 12 (42) 8 3 5 5 5 12 1 (3)3 ( )20 4 4 5 2 9 1 1 7 1 ( ) ( )3 ( )(6 ) 3 14 2 36 6 3 1 1 3 3 (6) 5

10、(6) 9 18 7 9 8 ( )( ) (6) 8 (48) 8 7 9 4 2 47 4 (2)2 ( )9 3 3 3 1 27 1 1 1 1 ( ) ( )2 ( )(6 ) 3 7 2 36 6 3 5 11 9 7 (18) 9 (18) 6 12 7 5 6 ( )( ) (24) 16 (18) 6 3 5 1 7 32 5 (1)2 ( )24 6 6 4 3 18 1 1 1 1 ( ) ( )2 ( )(4 ) 2 24 2 12 2 3 1 10 8 5 (19) 2 (19) 3 9 1 9 6 ( )( ) (108) 10 (60) 6 7 9 1 1 93 8 (1)3 ( )32 4 4 8 2 12 1 1 5 2 ( ) ( )3 ( )(2 ) 3 4 3 24 4 3 3 7 2 8 (7) 2 (7) 4 8