1、经典易错分数计算题(含简便计算及答案) 2019 年年六年级分数六年级分数计算计算 200 道道 9 2 8 9 = 4 3 7 4 = 18 7 14 9 = 21 10 5 7 = 39 15 25 13 = 45 17 34 25 = 13 4 16 39 = 64 63 42 36 = 54 11 44 27 = 8 3 3 2 = 51 3 27= 7 3 21= 6 5 25 18 = 14 9 15 2 = 72 55 11 8 = 8 7 35 16 = 14 13 14 13 = 13 4 16 39 = 13 8 72 39 = 6 5 10 3 = 8 3 8 3 = 8
2、 3 8 3 = 10 9 3 2 = 20 7 5 1 = 6 5 10 9 = 64 63 27 8 = 51 26 39 34 = 54 11 22 27 = 39 20 25 13 = 24 36 5 = 15 2 15 3 = 15 2 15 3 = 15 7 15 4 = 45 17 34 25 = 18 7 35 9 = 25 13 26 5 = 25 24 24= 54 11 22 27 = 8 13 39 72 = 39 20 25 13 = 5 3 10 3 20 7 8 7 12 5 6 5 1 7 2 7 5 6 5 4 3 3 1 28 19 7 2 14 1 10
3、9 3 2 5 1 16 15 4 1 8 1 9 5 6 5 3 2 经典易错分数计算题(含简便计算及答案) 5 4 ( 8 3 6 1 ) 13 11 ( 10 7 2 1 ) 15 7 12 5 15 2 11 4 9 5 11 7 9 1 25 13 8 1 25 8 9 8 8 3 8 1 11 3 8 5 11 8 8 1 7 5 17 8 7 5 17 9 8 3 5 1 8 5 4 3 28 15 4 1 28 1 7 5 14 5 7 2 19 11 18 7 19 8 18 1 15 13 9 4 3 1 4 3 4 3 99 5 16 3 4 5 9 25 5 4 4 5
4、 60 2 3 9 7 4 3 7 8 15 14 20 3 5 3 2 3 2 5 9 10 3 24 8 7 3 5 18 5 12 4 3 3 5 14 9 15 4 35 7 2 5 2 经典易错分数计算题(含简便计算及答案) 18 7 12 4 3 33 25 12 11 10 9 55 4 121 44 5 25 3 9 5 36 40 25 9 24 5 19 4 16 5 57 145 98 49 15 2 5 15 4 8 5 7 12 5 1 2 1 3 2 5 4 15 16 5 8 9 8 16 27 8 9 18 25 5 3 3 5 19 4 16 5 57 57
5、6 48 19 5 3 21 8 14 4 3 15 11 22 5 7 3 4 1 5 3 3 2 7 4 3 2 7 3 8 11 5 4 8 3 13 14 9 7 9 2 9 8 ( 8 7 9 1 ) 3 2 3 2 3 2 7 8 9 2 + + 8 1 9 1 5 3 1515 9 2 7 4 10 21 5 2 15 16 20 21 1 5 5 4 1 8 16 2001 2000 2001 经典易错分数计算题(含简便计算及答案) 分数乘除法简便运算分数乘除法简便运算 100100 题题 (1) (8 9 + 4 27 )3 9 (2) ( 3 8 - 3 8 ) 6 15
6、(3) 1 6 (7 - 2 3 ) (4) 5 6 5 9 + 5 9 1 6 (5)2 9 3 4 + 5 27 3 4 (6) 6 13 7 5 - 6 13 2 5 (7) 7 12 6 - 5 12 6 (8) 3 8 + 3 8 4 7 + 3 8 3 7 (9) 37 3 35 (10) 6 25 24 (11)15 21 3 4 + 10 21 3 4 - 3 4 (12) 7 10 101- 7 10 (13) 8 9 8 9 8 9 8 9 (14) 3 5 99 + 3 5 (15) ( 4 7 + 8 9 )7 9 (16)3 4 5 25 (17) 3634 35 (
7、18) ( 5 6 - 5 9 ) 18 5 (19)262 3 1 5 (20)32 2 5 5 6 (21) 5 1 2 1 10 1 (22) 5 7 5 35 经典易错分数计算题(含简便计算及答案) (23) 8 7 7 4 8 7 7 3 (24) 9 1 9 2 9 1 9 7 (25) 6 5 20 5 3 (26) 12 5 9 4 12 5 9 5 (27)3 8 - 3 8 4 7 - 3 8 3 7 (28)62 37 63 (29) 3 1 7 6 3 2 7 6 (30) 2 29 (15 29 31 ) (3131) 5 8 2 3 8 15 (3232)253 4
8、 4 (3333)54(8 9 - 5 6 ) (34) 72 1 24 5 18 7 12 11 (35)35) 3 8 3 11 6 2375. 0 11 5 8 3 (36)(36) 19 25 21 4 25 19 7 5 (37)(37) 48 1 8 3 6 5 (38) (38) 24 1 24 13 4 3 6 5 12 11 (39) (39) 11 5 9 2 5 11 9 7 (40) (40) 3 4 157 4 3 578 3 4 265 (41)(41) 8 8 3 8 8 3 (42) (42) 12 1 9 1 7 1 12 5 9 5 7 5 (43) (43
9、) 6 . 0 3 5 2444 5 3 3 5 33 (44)6.85 1 5 1 3.2 (45) 10125 4 (46) 8 5 8 5 15 (47)8 15 8 8 (48) 3 1 7 6 3 2 7 6 (49) ( 90 88 1 ) 89 1 (50) 5 7 3 8 + 5 8 5 7 经典易错分数计算题(含简便计算及答案) (51) 8 15 5 16 + 5 27 10 9 (52)18( 4 9 + 5 6 ) (53) 2 3 7+ 2 3 5 (54) () ( 1 6 1 12 )()(24 4 5 ) (55) () ( 5 7 4 7 + 4 7 ) 4
10、7 (56) 1 5 ( 2 3 + 1 5 ) 1 13 (57) 8 3 3 11 7 11 4 8 3 3 (58) 3 1 3333 (59) 5 9 12 5 12 7 9 5 (60) 6 5 5 2 4 5 3 2 (6161) (32(32 4 1 17)17) 12 5 (6262)(2525 4 3 ) 4 1 4 1 (6363) 25 18 16 9 25 7 16 9 16 9 (64) ) 7 3 21 4 9 5 (63 (65) 23 16 4 3 ) 3 1 2 1 ( 8 5 (66)(21 7 3 7 4 21) 4 1 (67) () (99 10 9
11、)9 (68) 15 14 ( 5 4 3 2 ) 11 10 (69)( 6 5 5 4 )30 (70)6 5 5 6 10 9 5 9 (71) 8 1 58 8 1 41 8 1 (72) 5 4 7 4 4 5 2 1 (73) 5 4 6 5 5 2 5 3 (74) 5 4 ( 8 5 2 1 ) 8 5 (75) 3 5 153 0.653 (76)(4 5 1 4 ) )7 3 7 10 (77) 1 8 1 2 (3 5 10 9 ) (78)(78) ( ( 2 2 1515 3 3 1111 ) ) 151511 11 (79)(79) 39 14 37 (80) 46
12、45 44 (81) 2008 2006 2007 (82) 4 7 15 22 7 12 (83) 9 10 13 17 9 10 4 17 (84)36 9 37 (85) 11 13 11 13 13 33 经典易错分数计算题(含简便计算及答案) (86) 25 7 101- 25 7 (87) 9 5 7 3 9 5 7 4 (88) 5 9 3 4 5 9 1 4 (89)17 9 16 (9191) 45 44 37 37 (9292)20042004 2003 67 (93)73(93)73 15 1 8 1 (94) 166(94) 166 20 1 41 41 (95)(95
13、)4 1 39 + 39 + 4 3 25 + 25 + 4 26 13 3 (96)1(96)1 17 4 (2 2 3 2 - - 4 3 )+ 15+ 15 12 1 21 17 (97)2000(97)200020002000 2001 2000 (98)(98) 199419921993 119941993 (99)3(99)3 5 3 2525 5 2 + 37.9+ 37.96 6 5 2 (100)(100)(9 9 7 2 +7+7 9 2 )()( 7 5 + + 9 5 ) 经典易错分数计算题(含简便计算及答案) 分数乘除法简便运算分数乘除法简便运算 100 题答案题答案
14、 (1) (8 9 + 4 27 )3 9 =31 (2) ( 3 8 - 3 8 ) 6 15 =0 (3) 1 6 (7 - 2 3 )=18 19 (4) 5 6 5 9 + 5 9 1 6 = 5 9 (5)2 9 3 4 + 5 27 3 4 =36 11 (6) 6 13 7 5 - 6 13 2 5 = 6 13 (7) 7 12 6 - 5 12 6 =1 (8) 3 8 + 3 8 4 7 + 3 8 3 7 = 4 3 (9) 37 3 35 = 335 6 (10) 6 25 24 = 6 25 (25-1) =5 25 19 (12)15 21 3 4 + 10 21
15、3 4 - 3 4 =7 1 (12) 7 10 101- 7 10 =70 (14) 8 9 8 9 8 9 8 9 =0 (14) 3 5 99 + 3 5 =60 (16)( 4 7 + 8 9 )7 9=92 (16)3 4 5 25=95 经典易错分数计算题(含简便计算及答案) (17) 3634 35 (18) ( 5 6 - 5 9 ) 18 5 =1 =(35+1)34 35 = 34 35 34 (19)262 3 1 5 (20)32 2 5 5 6 =(25+ 3 5 ) 1 5 =(30+5 12 )5 6 =5 3 1 =27 (21) 5 1 2 1 10 1 =
16、7 1 (22) 5 7 5 35 =7 7 1 (23) 8 7 7 4 8 7 7 3 = 7 8 (24) 9 1 9 2 9 1 9 7 =5 (25) 6 5 20 5 3 =12 2 1 (26) 12 5 9 4 12 5 9 5 = 5 12 (27)3 8 - 3 8 4 7 - 3 8 3 7 =0 (28)62 37 63 =37 62 37 (29) 3 1 7 6 3 2 7 6 = 6 7 (30) 2 29 (15 29 31 ) =31 30 (3232) 5 8 2 3 8 15 =9 2 (3232)253 4 4= 103 (3333)54(8 9 - 5
17、 6 )=3 (34) 72 1 24 5 18 7 12 11 =109=109 (36)36) 3 8 3 11 6 2375. 0 11 5 8 3 =0=0 (36)(36) 19 25 21 4 25 19 7 5 =19 =19 7 5 (38)(38) 48 1 8 3 6 5 =58 =58 (38) (38) 24 1 24 13 4 3 6 5 12 11 =7 =7 经典易错分数计算题(含简便计算及答案) (39) (39) 11 5 9 2 5 11 9 7 = = 11 5 (40) (40) 3 4 157 4 3 578 3 4 265 =750=750 (42)
18、(42) 8 8 3 8 8 3 =64 =64 (42) (42) 12 1 9 1 7 1 12 5 9 5 7 5 =5 =5 (43) (43) 6 . 0 3 5 2444 5 3 3 5 33 =60=60 (45) 6.85 1 5 1 3.2 =2 (45) 10125 4 =16 25 4 (46) 8 5 8 5 15 =10 (47)8 15 8 8=1 15 1 (48) 3 1 7 6 3 2 7 6 = 7 6 (49) ( 90 88 1 ) 89 1 = 1 88 1 (50) 5 7 3 8 + 5 8 5 7= 5 7 (51) 8 15 5 16 + 5
19、27 10 9 =3 1 (52)18( 4 9 + 5 6 )=23 (53) 2 3 7+ 2 3 5 =8 (54) () ( 1 6 1 12 )()(24 4 5 )=1 15 14 (55) () ( 5 7 4 7 + 4 7 ) 4 7=7 12 (56) 1 5 ( 2 3 + 1 5 ) 1 13 =3 (57) 8 3 3 11 7 11 4 8 3 3= 8 3 3 (58) 3 1 3333 =1000 (59) 5 9 12 5 12 7 9 5 = 9 5 (60) 6 5 5 2 4 5 3 2 =1 (6262) (32(32 4 1 17)17) 12 5
20、=60=60 (6262)(2525 4 3 ) 4 1 4 1 = =1031034 1 (6363) 25 18 16 9 25 7 16 9 16 9 = =8 9 (64) ) 7 3 21 4 9 5 (63 =20 (65) 23 16 4 3 ) 3 1 2 1 ( 8 5 =0 (67)(21 7 3 7 4 21) 4 1 = 4 21 (67) () (99 10 9 )9 =11 9 1 经典易错分数计算题(含简便计算及答案) (69) 15 14 ( 5 4 3 2 ) 11 10 = 10 7 (69)( 6 5 5 4 )30 =49 (70)6 5 5 6 10
21、9 5 9 = 2 1 (71) 8 1 58 8 1 41 8 1 =12.5 (73) 5 4 7 4 4 5 2 1 =14 1 (73) 5 4 6 5 5 2 5 3 = 3 4 (74) 5 4 ( 8 5 2 1 ) 8 5 】= 4 (75) 3 5 153 0.653=60 (76)(4 5 1 4 ) )7 3 7 10 =20 23 (77)1 8 1 2 (3 5 10 9 ) = 32 3 (78)(78) ( ( 2 2 1515 3 3 1111 ) ) 151511 11 =67=67 (79)(79) 39 14 37=3 39 31 (80) 4645 44
22、 =44 45 44 (81) 2008 2006 2007 =20062007 2006 (82) 4 7 15 22 7 12 =22 5 (83) 9 10 13 17 9 10 4 17 = 9 10 (84)36 9 37 = 37 28 (85)11 13 11 13 13 33 =33 20 (86) 25 7 101- 25 7 =28 (87) 9 5 7 3 9 5 7 4 = 9 5 (88) 5 9 3 4 5 9 1 4 = 5 9 (89)17 9 16 = 916 9 (9191) 45 44 37 37 (9292)20042004 2003 67 = =(1
23、1- - 45 1 )37 = 37 = (2003+12003+1) 2003 67 = 1= 137 37 - - 45 1 37 = 200337 = 2003 2003 67 + 1+ 1 2003 67 = 36= 36 45 8 =67=67 2003 67 (93)73(93)73 15 1 8 1 = (72 + = (72 + 15 16 ) ) 8 1 经典易错分数计算题(含简便计算及答案) = 72 = 72 8 1 + + 15 16 8 1 = 9= 9 15 2 (94) 166(94) 166 20 1 41 41 = (164 + = (164 + 20 41
24、) ) 41 1 = 164= 164 41 1 + + 20 41 41 1 = 4= 4 20 1 (95)(95)4 1 39 + 39 + 4 3 25 + 25 + 4 26 13 3 = = 4 3 13 + 13 + 4 3 25 + 25 + 4 3 13 26 = = 4 3 (13 + 25 + 213 + 25 + 2) = = 4 3 40 40 = 30= 30 (96)1(96)1 17 4 (2 2 3 2 - - 4 3 )+ 15+ 15 12 1 21 17 = = 17 21 1 1 12 11 + 15+ 15 12 1 17 21 = = 17 21
25、(1 1 12 11 + 15+ 15 12 1 ) = 21= 21 (97)2000(97)200020002000 2001 2000 = 2000= 2000 2001 200020012000 = 2000 = 2000 20022000 2001 = = 2002 2001 (98)(98) 199419921993 119941993 经典易错分数计算题(含简便计算及答案) = = 199419921993 11994) 11992( = = 199419921993 199319941992 = 1= 1 (99)3(99)3 5 3 2525 5 2 + 37.9+ 37.9
26、6 6 5 2 = 3= 3 5 3 2525 5 2 + + (2525 5 2 +12.5+12.5)6 6 5 2 = 3= 3 5 3 2525 5 2 + 25+ 25 5 2 6 6 5 2 + 12.5+ 12.56 6 5 2 = = (3.6+6.43.6+6.4)25.4 + 12.525.4 + 12.58 80.80.8 = 254 + 80= 254 + 80 = 334= 334 (100)(100)(9 9 7 2 +7+7 9 2 )()( 7 5 + + 9 5 ) = = ( 7 65 + + 9 65 )()( 7 5 + + 9 5 ) = 65= 65( ( 7 1 + + 9 1 )55( ( 7 1 + + 9 1 ) = 65= 655 5 = 13= 13