小数分数四则混合运算题

1、(3) 1/5 x2/3+5/6 49/9-4/3) 3/7 x (1 (4) 9/22+1/11 +1/215/36+1/27 8/9 x (2) (5) 5/3 x11/5+4/33 x (3) 12 x5/6 29 (6) 45 x2/3+1/3 x155/4+1/4) 8x (4 (7) 7/19+12/19 x5/66 -6-3/83/8 + (5) (8) 1/4+3/4 +2/35/9 5/9+3/7 xx 6) 4/7 (9) 8/7 x21/16+1/2(7) 5/2-3/2+4/5) (10) 101 x1/5 t/5 x211/8+1/9 ) (8) 7/8+ (1) (

2、6.8-6.8 x0.55)+8.55/6+5/6 9 x (9) (2) 0.12 x4.80.12 x4.88/9-1/3 10 x) 3/4 (3) (3.2 x1.5+2.5 ) +1.65/49+3/14 7 x) (1 (4) 6-1.6 +41/2+2/3 ) (26x (5) 38+7.85-5.37=11/5 8 xx4/5+8 ) (3 (6) 7.20.8-1.2 x55/6 ) (431 - )5/6 (7) 6-1.19x3-0.43=(5 - 9/7-2/710/21) (8) 6.5 x (4.8-1.2 x4)2/7(6-卷/91814 x) (9) 0.68

3、x1.9+0.32 x1.93/4(7 x x ) 4/525/16+2/3(10) 10.15-10.75 x0.4-5.712/15 - x )(8148/75/6 乂 (1) 5.8 x (3.87-0.13 ) +4.2x3.749/24( -17/323/4 x) 9 (2) 32.52- (6+9.728 +3.2) x2.52/9+1/3 x) 10 (3 (3) (7.1-5.6 ) x0.9-1.15 +2.53/25+3/7(5/7) 1 x (4) 5.4 ?2.6 x (3.7-2.9 ) +0.622/3+1/6 )2 (3/14 义 x6)12-7.2 + (6x1

4、2) 5 (.(9) 12x6x2/5 + (12-7.2 ) -6 (6) 2/3 +1/2 -1/4 (6/13 m/26 -2/3 10 ) 12 x6+7.2-6(7) 2- (1) 0.68 + (8) 2/9 + 1/24/5 +3/8 x1.9+0.32 x1.9(10) (58+370 ) + (64-45 ) (9) 10+5/9 +1/6 x4(11) 9/20 420+580-64 x21 +28 ) (101/2 x2/5 +9/10 + (4) (136+64 ) 乂 (65-345 +23) + (1 ) 5/9 x3/10 +2/72/50.4-5.75)xm/4

5、4/5 -1/8 ()(21/2 +(23/4-3/4)*(3*6+2) 6 -x(3)3/45/7 x4/31/2 ) (49/9-4/3 3/7 乂 (7) x) (423 -8/91/27 +1/2715/36+1/27 8/94 义(8)十义 6) 85/6 +2/53(6x 5/62/9 (xx) 1/2 +3/45/124/5 9 ) 125/4+1/4x10 + x(7) 8/93/4 - 3/83/4 ) 8 (6 n/11 3/8 3/8 (1) 6+ + +)(85/85/43/23 y/9 x x5/9+3/7(2x)(9(6.8680.55) 一8.5 ) 4/7 x

6、+ x)( 100.124.80.124.8 3/2+4/5) (3) 5/2- 1/8+1/9 ) 4) +x)( 13.21.5+2.51.6 7/8+(5/6+5/6-6-1.64 9 乂 (5) (28/9-1/3(3x6)3/4 x+)7.20.8-1.25(5/49+3/14 x x() 4 (6.54.8-1.24 x) 7 ( ) 7 +4.2 )3.87-0.135.85 () x( x1/2+2/3 ) (83.74 6 x (11/5(32.52-6 () x82.5 )x3.2 + x4/5+8 )(96+9.7285/6 5/6-)(2.5 0.9-1.15 ) x7

7、.1-5.6 ()7( +1031x ) 10/21 -2/7 (9/7- ) 1 (+0.62 )3.7-2.9 x (2.6+5.4) 8 (.(5) 5.8x (2/7 3.87-0.13 ) +4.2 x3.74 (2) 5/9 x18 t4 x (刈/4 6 ) 32.52-(6+9.728 +3.2) x2.5 (3) 4/5 x25/16+2/3 (x (4) 14 x8/7 -5/612/15 7 )(7.1-5.6 ) x0.9-1.15 +2.5(x3/49/24 8 )5.4?2.6x (3.7-2.9 )+0.62 (5) 17/32 -(9 (6)3x2/9+1/3)

8、12 x6 + (12-7.2 ) -6()5/7 x3/25+3/7 10 ) 12 x6+7.2-6(7 (1) (83/14 x 2/3+1/6) 0.68 x1.9+0.32 x1.9(2) x (9) 1/52/3+5/6 58+370) + (64-45 )(3) 420+580-64 ) (109/22+1/11+1/2 x21 -28(4) x) 5/311/5+4/3 136+6 乂 (65-345 +23)(1 (x) (2452/3+1/35 )10.75 x15 x0.4-5.7(6) 18.1 + (3 0.299 +0.23) xx) (37/19+12/195/6

9、 1(7) (6.8-6.8 x0.55)+ (4) 1/4+3/42/3+8.5(8) 0.12 x) (58/721/16+1/2x4.8s12x4.8(9) (3.2 x1.5+2.5 ) +x-x 十 61011/51/521 1.6(10) 8.5 3.2 x6+ (1.5+2.5 ) +1.6 -x) (7(6.8-6.80.55) (1 ) x0.12 + x 0.124.84.8 0.68 x1.9+0.32 x1.9 ) (8 () (93.22) 10.15-10.75 x) t.5+2.5 x1.6 0.4-5.7(3) 4 +) (106-1.65.8 x (3.87-

10、0.13 ) +4.2 x3.74(4) 32.52- (38+7.85-5.37) (16+9.728 +3.2) x2.5(5) 5 x47.2)(20.8-1.2 (7.1-5.6 ) x0.9-1.15 +2.5(63-0.43 x6-1.19 ) (3) 5.4 +2.6 x (3.7-2.9 ) +0.62-6)12-7.2 + (6x12) 7 ( ) 4x4.8-1.2 义(6.5) 4 (.(1) 4/7- (7.2-62/7 -10/21 )(8) 12x6+ ()笠.5 2) 19x18 t4 x2/7 ) (933.02 (148.4-90.85 (3 (10) (25

11、%-695%-12%)*36) 5x25/16+2/3 x3/4(4) 4x (1) 4*3/5+3/4*2/5 8/756x12/15(5) 7/32 - 2) 1-1/4+8/9/7/9 3/4x9/24(6) 2/3 +1/2 + (3) 1/63/24+2/21-1/4 x2/5(7) 2-6/13 - (4) 15*3/5 9/26 2/3(8) 2/9 +1/2 ) (53/4 +9/10-1/6+4/5 + 3/8(9) 10 + + 6) 1/3+1/2)5/6-1/3+1/7 5/9 +1/6x4(10) x) 5%+.3/749/9-4/3 1/2x2/5 +9/10 m/

12、20(7 () (89x15/36+1/271) 5/9 x3/10 + 2/7 +2/5(2) 1/2 +1/4 xx x )(925/6 w/93 4/5 1/8(3) 3/4 ) 103 x5/4+1/4x5/7 x4/3 1/2() (1944 ) 23-8/9 x1/27 -3/8 w/86 +1/27(5) xx) (295/75/9+3/75/9 8x5/6 + 2/5 +4(6) 1/2 + ) () (36/2-3/2+4/53/4x5/12 x4/5(7) 8/9 x3/4 ) () (48+1/8+1/93/8+3/4(8) 5/8 y/4 +3/23 凶/11 x) (

13、585/6+5/6(9) 8/9-1/3 x) 6 (1/41.2 x2.5+0.8 x2.5()(710) 8.9 x1.25-0.9 x105/49+3/14 x1.25(1/2+2/3 x () 8 (1.51) 12.5x7.4 ) x0.8(9/) 9 (22) 9.911/5 x4/5+8 x 6.4- (2.5+0.24 )0.5x9.5+6.5 x6.5) 3 (5/6七/6 x3.1) 10 (.(7)5/2- (x3.4 3/2+4/5 ) (4)0.35 x1.6+0.35 (8x8.6 x4 )7/8+ (1/8+1/9 )(5) 0.25 (9) 9 (6) 6.72

14、-3.28-1.72x5/6+5/6(10) 0.45+6.37+4.55 3/4x8/9-1/3(7 (3- (25-2.51 ) 7x) 5/49+3/14(8) 5.4+6.9 x (2) 6 (9) 2 x41846-620-380乂 (1/2+2/3 )(3) 8) 4.8 x46+4.8 x54 x4/5+8 x11/5(10 (4) 31 (1) 0.8+0.8 x2.5x5/6 a/6(52.4 ) 9/7- (2/7 -10/21 ) x x) (21.25 x3.68 x2.5-12.5 (36) 5/9 x18 -x) 28 x12.5-12.520 14 x2/7(7)

15、 (423.65- (3.07+3.65 4/5 x25/16+2/3 x3/4(8) 14 x8/7 - x x) (54+0.4 x0.25871.25 5/6 x12/15(9x1.6599+1.65) 17/32 34 x9/24 ) (6 ( 27.85-10 ) 3 x2/9+1/3)(7.85+3.4(1 x x x x x 8481.25+501.250.28) 5/7 x3/25+3/7(9) 3/14 x 2/3+1/6x) 9 (7.89.9+0.78(10) x5.15) (107/8+6.1-0.60625 1/5x2/3+5/6(x) (13/74 ) 9/22+1

16、/11 +1/2 49/9-4/3(5) x8/9 ) (215/36+1/27 5/3x11/5+4/3(1) 1/4 + 3/4+2/31+5/6-19/12) 8 (x8) 4 (5/4+1/4 7 ) 7/19+12/19 x5/6(3/8 6) 5 (8) 6 +3/81/4+3/4+2/321/16+1/2x8/7 ) 9(5/9x5/9+3/7 x4/7 )6(.(3) 3.2x( x21 1.5+2.5 )+1.6 (10) 101 x1/5 t/5 (6.8-6.8 x0.55)+8.5 4)6-1.6+4 (5) 5.38+7.85-5.37 乂 (2) 0.12 x4.8

17、 0.124.8(6) 7.2 w.8-1.2 x5 3) (3.2x1.5+2.5 ) +1.6 (2)( 6-1.196-1.6 +4 乂3-0.43 ) (4 (8+ (5) 7.20.8-1.2 x5 ) 6.5 x (4.8-1.2 x4)(9) 0.68 x1.9+0.32 x) x (6) 6.54.8-1.2 x4 1.9(10) 10.15-10.75 x0.4-5.7 ) (710.15-10.75 x0.4-5.7(1) 2/3 x5/7 xx(8) 5.83.87-0.13 ) +4.23.74(2) 1/3 + + )932.52- (6+9.7283.2 ) x2.

18、5 1/2(3) + () (107.1-5.6 ) 乂0.9-1.152.5 3/4 x2()3.7-2.9+0.62 4 ) 2+5/6 x() (15.4 +2.6 (2) 125) 1/4) +(x612-7.2-6-1/5(6+x) (31267.2-6 ) 2-5/6(7) 3/4 +1/3 x) (41024.5(2.(28) x6.9 1/2+1/4+ 6.9x) (57.8 (6 () 9) 45 乂 2/3 + 1/3 乂 15 0.25 5.6 乂 (1.2520 x (87(10.239 () +) x2) 8/7 x 21/16 + 1/2(3) 101 x 1/5

19、- 1/5 x 218.5 0.55) x(6.8-6.8 ) 10 +(x0.124.8 x0.12) 1 (+4) 3/7 x 49/9 - 4/34.81/27 ) 8/9 x 15/36 + 5(1.6)+1.5+2.5 x3.2) (2 (.(9)45x2/3 + 1/3 x 15) 12x5/6 - 2/9 x3 (6(10)7/19 + 12/19x 5/6(7) 6+3/8 - 3/8 气(1) 1/4 + 3/4+2/3(8)4/7 x 5/9 + 3/7 x 5/9(2) 8/7 x 21/16 + 1/2 ) (9) 5/2 - ( 3/2 + 4/5(3) 101 x 1/5 1/5 x 21 (10)8x 5/4 + 1/4 (4) 38.95 +(64-45 ) (17/8 +( 1/8 + 1/9(2 () 9 x