1、六年级解方程及解比例练习题解比例:x:10= : 0.4:x=1.2:2 =413 4.21x3: = :x 0.8:4=x:8 :x=3:12251.25:0.25=x:1.6 = =92x8x635x: =6: = 45:x=18:26345.462.8:4.2=x:9.6 :x= : 2.8:4.2=x:9.6108x:24= : 8:x= : : =x: 41543856120642.4 x 6 x 15 13 0.612 1.5x x x x 0.734 12 45 1112 45 2536 114 121050 x40 1.3 x5.220 x3.6618 x 13 120 169
2、 4.60.2 8x 38 x64解方程X X= 2X + = 70%X + 20%X = 3.627 425 35X =20 25% + 10X = X - 15%X = 685314X X121 5X3 X 1282173216X5 =13.4 3X= X = 836X X= 4X6 =2743X= X = X = 125 310 57298615X = 4x3 9 = 29 x + x = 4642X21 =4 6X5 =13.4 X- X= 4638103225 13 3105X= X= X = X =12 X= X=958148457298 X = X-0.25= =30% 6356
3、2X4+0.7X=102 X+ X=42 X+ X=105 X- X=400 X-0.125X=8 413= X+ X=18 X( + )= x0.375x= X3437 16 38 1312 65x + =4 X X12 5 X2.4582180.365- x = (x- 4.5) = 7 x- 25%x = 1034 35 23 12x- 0.8x = 16+6 20 x 8.5= 1.5 x- x -4= 21 45X25%X=90 X X= X X= 2X + = 70%X + 20%X = 37 89 27 4325 353.6 X =20 25% + 10X = X - 15%X
4、= 68 541X X121 5X3 X 12 6X5 =13.4 8325732413X= X = X X= 4X6 =2 X= 7168125 310X = X = X = 532953564214x3 9 = 29 x + x = 4 X21 =4 6X5 610=13.4 X- X= 4 638 5X= X= X25 13 310 92185= X =12 X= X= 4845726X = 3562X-0.25= =30% 4+0.7X=102 1XX+ X=42 X+ X=105 X- X=400 3214183X-0.125X=8 = X+ X=18 X3637X( + )= x0
5、.375x= x + =4 16 38 1312 53218X 7X12 5 X2.458 0.365- x = 34 35(x- 4.5) = 7 x- 25%x = 10 X25%X=90 23 12x- 0.8x = 16+6 20 x 8.5= 1.5 x- x -4= 21 45X X= X X= 2X + = 37 89 27 4325 3570%X + 20%X = 3.6 X =20 25% + 10X = 5414X - 15%X = 68 X X121 5X3 832173X= X = X X= 4X6 =283721673X= X = X = 125 310 572986
6、15X = 4x3 9 = 29 x + x = 4642261X21 =4 103018).(6X5 =13.4 X- X= 463825 13 3105X= X= X =198454281X =12 X= X= 32457296X = X-0.25= =30% 5623414X4+0.7X=102 X+ X=42 X+ X=10532141X- X=400 X-0.125X=8 = 83 X36X+ X=18 X( + )= x0.375x= 37 16 38 1312 5x + =4 X 7X12 5 X2.458210.365- x = (x- 4.5) = 7 x- 25%x = 1
7、034 35 23 12x- 0.8x = 16+6 20 x 8.5= 1.5 x- x -4= 21 45计算下面各题，能简算的要简算. 3 5 4 23 15 47 35 25 34（ + ） 5 （ + ）27 6 （ ） 220 15 89427 218 730（ ） （7 ） + 38 38 615 16 23 56 59 59 16 + 6 629 34527 34 613 75 613 25 712 51221 37 24 320 335 625（ + 7 ） 25 + 35 34 12 34 25 57 49 571 + （5 ） 514 2125 12 64 46 16 2312（ + + ） （125 34） （ + ）7 5724 56 34 417 15 37 199 （24 + ） 781920 1920 83 124 677 + 0.42525 210 910 110
