北师大版七年级数学上册有理数计算题精选.docx

1、北师大版七年级数学上册有理数计算题精选 1 15 1 2 (5) 5 (5) 8 16 3 5 4 ( )( ) (36) 2 (45) 4 3 5 5 5 64 2 (2)2 ( )30 6 6 5 1 12 1 1 7 1 ( ) ( )2 ( )(4 ) 3 4 2 36 6 3 9 15 3 5 (1) 2 (1) 8 16 9 5 8 ( )( ) (54) 14 (15) 8 3 5 1 1 14 9 (3)2 ( )21 3 3 7 3 18 2 1 3 1 ( ) ( )2 ( )(3 ) 2 21 3 20 2 5 4 9 5 8 (18) 1 (18) 5 10 7 9 6

2、 ( )( ) (24) 20 (12) 6 7 9 1 3 79 2 (1)3 ( )24 4 4 6 2 15 1 1 7 1 ( ) ( )2 ( )(6 ) 3 4 2 36 6 3 1 9 7 2 (9) 9 (9) 4 8 3 5 4 ( )( ) (18) 6 (51) 4 3 5 4 4 33 1 (1)2 ( )20 5 5 4 1 12 1 1 3 1 ( ) ( )2 ( )(2 ) 3 9 2 12 2 3 7 19 8 3 (4) 3 (4) 6 18 3 9 4 ( )( ) (84) 18 (57) 4 7 9 1 1 54 9 (1)3 ( )32 8 8 4

3、2 21 1 1 3 1 ( ) ( )3 ( )(2 ) 3 8 2 24 4 3 5 1 2 5 (5) 1 (5) 4 12 1 9 2 ( )( ) (66) 10 (6) 2 7 9 1 1 56 2 (3)2 ( )36 6 6 6 4 12 1 1 3 1 ( ) ( )2 ( )(6 ) 3 20 2 12 2 3 7 17 2 7 (6) 2 (6) 6 18 1 7 4 ( )( ) (108) 16 (51) 4 5 7 1 7 85 5 (2)3 ( )42 6 6 7 1 12 1 1 1 6 ( ) ( )2 ( )(3 ) 2 7 2 20 2 5 1 1 8 6

4、 (14) 4 (14) 9 18 1 9 2 ( )( ) (84) 18 (18) 2 7 9 7 9 46 7 (2)2 ( )24 8 8 3 4 15 2 1 5 1 ( ) ( )2 ( )(3 ) 3 32 3 24 4 3 9 1 3 6 (5) 3 (5) 8 24 1 9 2 ( )( ) (66) 6 (54) 2 7 9 8 6 63 3 (2)2 ( )35 7 7 5 1 14 1 1 1 6 ( ) ( )2 ( )(4 ) 2 3 2 20 2 5 5 1 9 9 (17) 6 (17) 6 12 3 7 2 ( )( ) (42) 12 (15) 2 5 7

5、7 5 12 3 (1)3 ( )18 6 6 3 1 14 1 1 5 6 ( ) ( )2 ( )(5 ) 2 7 2 60 6 5 7 13 3 3 (3) 1 (3) 6 12 1 7 4 ( )( ) (30) 2 (30) 4 5 7 8 8 18 9 (3)2 ( )27 9 9 3 1 14 1 1 1 1 ( ) ( )3 ( )(4 ) 2 4 3 20 2 5 3 3 2 2 (2) 8 (2) 2 4 3 7 4 ( )( ) (120) 10 (39) 4 5 7 4 6 39 2 (3)2 ( )10 5 5 2 1 9 2 1 1 4 ( ) ( )2 ( )(2 ) 3 4 3 20 2 5 8 1 4 2 (8) 2 (8) 9 18