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分数加减法简便运算136题.doc

1、 分数加减法简便运算专项练习136题(有答案) (1) ++﹣ (2) ﹣(﹣) (3) . (4) ﹣(﹣)  (5) +++ (6) +﹣+ (7) ﹣(+) (8) ﹣﹣ (9) ﹣+﹣. (10) . (11) 999+99+9+.  (12) ++++++++ (13) ﹣+﹣ (14) ﹣(﹣1) (15) 2﹣﹣. (16) ﹣0.4+﹣. (17) . (18) (19) (20) (21) +﹣ (22) 1﹣﹣ (23) +++ (24) (25) (26) +﹣ (27) ﹣(﹣) (28) ++ (29) 3

2、﹣ (30) (31) 4﹣﹣ (32) . (33) +(+) (34) ﹣(+) (35) +++. (36) +++ (37) +﹣ (38) +﹣+ (39) +(﹣)+ (40) 0.58++1.12+ (41) 11﹣﹣. (42) (43) 3.5﹣﹣. (44) +++﹣﹣. (45) ﹣+﹣ (46) ﹣(+) (47) +++. (48) 6﹣﹣ (49) ﹣+ (50) ﹣(﹣) (51) +﹣ (52) +++ (53) ﹣+﹣ (54) +++ (55) 8﹣﹣ (56) +﹣+

3、 (57) ﹣(+) (58) 2﹣﹣ (59) ﹣+ (60) +++ (61) ﹣(+) (62) 1﹣﹣﹣﹣﹣ (63) 6﹣﹣ (64) ﹣+﹣ (65) ﹣(﹣) (66) ﹣(+) (67) . (68) 1﹣()﹣. (69) ﹣(+) (70) ++ (71) ﹣(﹣) (72) +﹣+. (73) . (74) . (75) ﹣+ (76) ++ (77) ﹣+ (78) +++ (79)+2++3, (80)++, (81)+++, (82) , (83)﹣(+

4、 (84) (85) (86)﹣+, (87), (88)+﹣+, (89), (90)(2﹣1)﹣(1﹣2) (90)(2﹣1)﹣(1﹣2), (91)19.76﹣4﹣3, (92)8﹣8+2, (93)2.5×1.25×32, (94)﹣+﹣, (95)﹣(﹣), (96)1﹣, (97)+, (98), (99), (100), (101)16×(1000+), (102)2﹣, (103)11+13+15+17+19+21, (104) (105) (106)51.27﹣8.66﹣1.34 (107)32.5÷(0.0

5、5×50) (108) (109). (110)++﹣ (111)﹣(﹣) (112)﹣(+) (113), (114)﹣(﹣), (115)﹣(﹣), (116)+++ (117)5+1+3+2+6+4+, (118)﹣+﹣, (119)()﹣(1.375﹣) (120)+++ (121)+++++, (122)++, (123)+++, (124)++++, (125)﹣+, (126)5﹣﹣1, (127)+++, (128), (129)1﹣﹣, (130), (131)﹣+﹣, (132)﹣(﹣) (133)5﹣﹣﹣, (134)

6、﹣(10﹣6)÷8, (135)++ (136)+﹣+ 参考答案: (1)++﹣, =(+)+(﹣), =1+0, =1; (2)﹣(﹣), =﹣+, = (3), =()+(+), =7+9, =16 (4)﹣(﹣), =﹣, =; (5)+++, =(+)+(+), =1+1, =2; (6)+﹣+, =(+)+(﹣), =1+0, =1  (7)﹣(+), =﹣﹣, =,

7、 (8)﹣﹣, =﹣(+), =﹣1, =; (9)﹣+﹣, =(+)﹣(+), =1﹣1, =0. (10)11﹣2+3﹣0.2, =11+3﹣(0.2+2), =15﹣(0.2+2.8), =15﹣3, =12 (11)999+99+9+, =(999+99+9)+×3+, =[(1000﹣1)+(100﹣1)+(10﹣1)]+(+), =1110﹣3+3, =1110 (12)++++++++, =+++++(+)+(+)+(+)+(+), =+++++(+)+(+)+(+)+(), =×3+(+)+(×3)+(+2)+(), =1+1+

8、1+1+1, =5; (13)﹣+﹣, =(+)﹣(+), =﹣1, = (14)﹣(﹣1), =﹣+1, =+1, =1; (15)2﹣﹣, =2﹣(+), =2﹣1, =1 9.﹣0.4+﹣, =﹣+﹣, =(+)﹣(+), =1﹣1, =0 (16), =()+(), =2+3, =5. (17)+++, =(+)+(+), =+1, =1; (18)4﹣﹣, =4﹣(+), =4﹣1, =3; (19)+(+), =++, =(+)+, =1+, =1. (20)+﹣, =+﹣, =; (21)1﹣﹣, =

9、1﹣(+), =1﹣1, =0; (22)﹣, =﹣, =; (23)+++, =(+)+(+), =1+1, =2; (24)4﹣2﹣1, =4﹣2﹣1, =﹣; (25)7﹣(﹣), =7﹣, =6. (26)+﹣, =﹣, =; (27)﹣(﹣), =﹣, =; (28)++, =(+)+, =1+, =1; (29)3﹣, =3﹣﹣﹣, =(3﹣)﹣(+), =2﹣1, =1; (30), =(+)+(+), =1+1, =2; (31)4﹣﹣, =3﹣, =3﹣, =2, (32)1﹣+3﹣, =1+3﹣

10、 =5﹣1, =4 (33)+(+), =++, =1+, =1; (34)﹣(+), =﹣﹣, =﹣, =; (35)+++, =++(+), =1+1, =2. (36)+++, =(+)+(+), =1+1, =2; (37)+﹣, =+(﹣), =+, =; (38)+﹣+, =(﹣)+(+), =; (39)+(﹣)+, =+﹣+, =(﹣)+(+), =+1, =1; (40)0.58++1.12+, =(0.58+1.12)+(+), =1.7+1, =2.7; (41)11﹣﹣, =11﹣(+),

11、 =11﹣1, =10. (42), =()﹣, =1﹣, =; (43)3.5, =3.5﹣(), =3.5﹣1, =2.5 (44)+++﹣﹣, =(+)+(+)﹣(+), =1+﹣, =1﹣, =1 (45)﹣+﹣, =+﹣(+), =1﹣1, =0; (46)﹣(+), =﹣﹣, =2﹣, =1; (47)+++, =++(+), =1+1, =2. (48)6﹣﹣, =6﹣(+), =6﹣1, =5; (49)﹣+, =+﹣, =1﹣, =; (50)﹣(﹣), =﹣+, =+﹣, =1﹣, =; (51

12、﹣, =﹣+, =1+, =1; (52)+++, =(+)+(+), =1+1, =2; (53)﹣+﹣, =(+)﹣(+), =1﹣1, =0. (54)+++ =()+(+), =1+, =1; (55)8﹣ =8﹣(), =8﹣, =7; (56)﹣ =()+(), =0+1, =1; (57)() =﹣, =, =0. (58)2﹣﹣, =2﹣(+ ), =2﹣, =; (59)﹣+, =﹣(), =﹣, =; (60)+++, =(+)+(), =1, =; (61)﹣(+), =, =, =

13、. (62)1﹣﹣﹣﹣﹣, =﹣﹣﹣﹣, =﹣﹣﹣, =﹣﹣, =﹣, =; (63)6﹣﹣, =6﹣(+), =6﹣1, =5; (64)﹣+﹣, =(+)﹣(+), =1﹣1, =0; (65)﹣(﹣), =﹣+, =+﹣, =1﹣, =; (66)﹣(+), =﹣﹣, =﹣, =. (67), =1﹣+1﹣+1﹣+1﹣+1﹣+1﹣, =6﹣﹣﹣, =6﹣, =. (68)1﹣()﹣, =1﹣+﹣+﹣+﹣+, =(1﹣)+(﹣)+(﹣)+(﹣)+, =+0+0+0+, = (69)﹣(+) =﹣, =; (70)++

14、 =++, =1+, =1; (71)﹣() =﹣+, =; (72)+﹣+ =()+(+), =0+1, =1. (73)+3++1, =(+3)+(+1), =3+2, =5 (74), =++++++++, =﹣+﹣+﹣+﹣+﹣+﹣+﹣+﹣+﹣, =﹣, =. (75), =, =1; (76), =, =1+, =1; (77), =, =; (78), =, =2+, =2. (79)+2++3, =(+)+(2+3), =1+6, =7. (80)++, =++, =1+, =1; (81)+++,

15、 =(+)+(+), =1+1, =2 (82) , =(+)+(+), =1+2, =3; (83)﹣(+), =﹣﹣, =﹣﹣, =1﹣, =. (84) =(2+7)+(7+2), =10+10, =20; (85) =(1+)+(2+)+(3+)+(4+)+(5+), =(1+2+3+4+5)+(++++), =15+(++++﹣), =15+(1++), =16+, =16; (86)﹣+, =+﹣, =1﹣, =. (87), =(), =1, =1; (88)+﹣+, =()+(), =0+1, =1; (8

16、9), =()+(), =1+1, =2. (90)(2﹣1)﹣(1﹣2) (90)(2﹣1)﹣(1﹣2), =2﹣1﹣1+2, =(2+2)﹣(1+1), =4﹣3, =1; (91)19.76﹣4﹣3, =19.76﹣(4+3), =19.76﹣8, =11.76; (92)8﹣8+2, =8+﹣(8+)+(2+), =8+﹣8﹣+2+, =(8﹣8+2)+(﹣+), =2+1, =3; (93)2.5×1.25×32, =2.5×1.25×4×8, =(2.5×4)×(1.25×8), =10×10, =100. (94)﹣+﹣, =(

17、﹣(+), =1﹣1, =0; (95)﹣(﹣), =(+)﹣, =1﹣, =. (96)1﹣, =1﹣(+), =1﹣1, =0; (97)+, =(), =1﹣, =; (98), =()+(), =1+, =1. (99), =10﹣(5+4), =10﹣9, =(9﹣9)+(1﹣), =; (100), =﹣+, =0+, =. (101)16×(1000+), =16000+16×, =16000+1, =16001; (102)2﹣, =2﹣()+(), =2﹣1, =, =, = (103

18、.11+13+15+17+19+21, =(11+13+15+17+19+21)+(+++++), =(11+21)×6÷2+(1﹣+﹣+﹣+﹣+﹣+), =96+(1﹣), =96+, =96. (104) (105) (106)51.27﹣8.66﹣1.34 (107)32.5÷(0.05×50) (108) (109). (104) =, =1+, =; (105) =, =; (106)51.27﹣8.66﹣1.34 =51.27﹣(8.66+1.34), =51.27﹣10, =41.27; (107)32.5÷(0.05×

19、50) =32.5÷, =, =13; (108) =, =, =; (109) =, = (110)++﹣ (111)﹣(﹣) (112)﹣(+) (110)++﹣, =(+)+(﹣), =1﹣0, =1; (111)﹣(﹣), =(+)﹣, =1﹣, =; (112)﹣(+), =﹣, =﹣, = (113), =()+(﹣)+(﹣)+…+(﹣), =+﹣+﹣+…+﹣, =﹣, =. (114)﹣(﹣), =﹣(﹣), =﹣, =; (115)﹣(﹣), =﹣+, =1; (116)+++ =(+)+(+) =

20、1+ =1 (117)5+1+3+2+6+4+, =(5+2+4)+(1+6)+(3+), =12+8+4, =24 (118)﹣+﹣, =+﹣﹣, =(+)﹣(+), =1﹣1, =0. (119)()﹣(1.375﹣) =﹣1.375+ =2++3﹣1.375 =3+1 =. (120)+++ =+×+×+×, =×(1+)+×(+), =+×, =×(1+), =×, =. (121)+++++, =+++++, =1﹣+﹣+﹣+﹣+﹣+, =1 (122)++, =(1﹣)+(﹣)+(﹣), =1﹣+﹣, =1﹣, =;

21、123)+++, =(1﹣)+(﹣)+(﹣)+(﹣), =1+﹣+﹣+﹣, =1﹣, =, (124)++++, =(1﹣)+(﹣)+(﹣)+(﹣)+(﹣), =1﹣+﹣+﹣+﹣+﹣, =1﹣, = (125)﹣+, =﹣+, =; (126)5﹣﹣1, =5﹣(+1), =5﹣2, =3; (127)+++, =(+)+(+), =1+1, =2 (128), =()+()+(﹣)+(﹣)+(﹣)+(﹣), =(4﹣4)+(4﹣4)+(4﹣4)+(3﹣)+(4﹣4)+(12﹣12), =﹣+﹣+﹣+﹣+﹣+﹣, =++++﹣, =+﹣+++, =2+++, =4; (129)1﹣﹣, =1﹣(﹣), =1﹣, =; (130), =﹣+, =0+, = (131)﹣+﹣, =(+)﹣(+), =2﹣1, =1; (132)﹣(﹣) =﹣ =; (133)5﹣﹣﹣, =5﹣(++), =5﹣2, =3; (134)﹣(10﹣6)÷8, =﹣4÷8, =﹣, = (135)++ =++, =1+, =1; (136)+﹣+ =++﹣, =1﹣, =1;

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