分数乘除法简便运算专练100题(有答案).docx

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1、分数乘除法简便运算专练100题(有答案) 分数乘除法简便运算100题(有答案) (1)(+)3 9 (2)(- ) (3) (7 - ) (4) + (5)+ (6) - (7) 6 - 6 (8)+ (9) 37 (10) 24 (11) + - (12)101- (13) (14) 99 + (15) ( + )7 9 (16)325 (17) 36 (18) ( - ) (19)26 (20)32 (21) (22) (23) (24) (25) (26) (27)- - (28) (29) (30)(15) (31) (32)254 (33)54(- ) (34) (35) (36)

2、(37) (38) (39) (40) (41) (42) (43) (44) 6.83.2 (45) 101 (46) 15 (47)88 (48) (49)( 90) (50)+ (51)+ (52)18(+) (53)7+5 (54)()(24) (55)(+) (56)(+) (57) (58)3 (59) (60) (61) (3217) (62)(25) (63) (64) (65) (66) (2121) (67)(99)9 (68) () (69)()30 (70) (71) 5841 (72) (73) (74) () (75) 153 0.653 (76)() (77)()

3、 (78) ()1511 (79) (80) 46 (81) 2008 (82) (83) (84)36 (85) (86) 101- (87) (88) (89)17 (90)2006 (91)37 (92)2004 (93)73 (94) 16641 (95)39 + 25 + (96)1(2 - )+ 15 (97)20002000 (98) (99)325 + 37.96 (100)(9+7)(+) 分数乘除法简便运算100题答案: (1)(+)3 9 =31 (2)(- ) =0 (3) (7 - )= (4) + = (5)+ = (6) - = (7) 6 - 6 =1 (8)+

4、= (9) 37 = 3 (10) 24 = (25-1) =5 (11)+ - = (12)101- =70 (14) =0 (14) 99 + =60 (16) ( + )7 9=92 (16)325=95 (17) 36 (18) ( - )=1 =(35+1) = 34 (19)26 (20)32 =(25+) =(30+) =5 =27 (21) = (22) =7 (23)= (24)=5 (25) =12 (26)= (27)- - =0 (28) =37 (29) = (30)(15) = (32) = (32)254= 103 (33)54(- )=3 (34)=109 (3

5、6) =0 (36) =19 (38) =58 (38) =7 (39) = (40) =750 (41) =64 (42) =5 (43) =60 (44) 6.83.2 =2 (45) 101 =16 (46) 15 =10 (47)88=1 (48) = (49)( 90) = 1 (50)+= (51)+= (52)18(+)=23 (53)7+5 =8 (54)()(24)=1 (55)(+)= (56)(+)=3 (57) = (58)3 =1000 (59) = (60) =1 (61)(3217)=60 (62)(25)=103 (63) = (64) =20 (65) =0

6、(66)(2121) = (67)(99)9 =11 (68)() = (69)()30 =49 (70) = (71) 5841=12.5 (72)= (73) = (74) ()】= 4 (75) 153 0.653=60 (76)()= (77)() = (78) ()1511 =67 (79)=3 (80) 46=44 (81) 2008=2006 (82) = (83) = (84)36= (85)= (86) 101- =28 (87) = (88) = (89)17 = 9 (90)2006 =2006 =(2007-1) =2007-1 =2008- =2006 (91)37

7、(92)2004 =(1-)37 = (2003+1) = 137 - 37 = 2003 + 1 = 36 =67 (93)73 = (72 + ) = 72 + = 9 (94) 16641 = (164 + ) = 164 + = 4 (95)39 + 25 + = 13 + 25 + = (13 + 25 + 2) = 40 = 30 (96)1(2 - )+ 15 = 1 + 15 = (1 + 15) = 21 (97)20002000 = 2000 = 2000 = (98) = = = 1 (99)325 + 37.96 = 325 + (25+12.5)6 = 325 + 256 + 12.56 = (3.6+6.4)25.4 + 12.580.8 = 254 + 80 = 334 (100)(9+7)(+) = (+)(+) = 65(+)5(+) = 655 = 13

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