1、1六年级解方程及解比例练习题4.24x1.8 x =20 5x3 x - 15% x = 68412175x = 0.24x1.8=4.2 x = 537298615x21 =4 x =12 3.6x22.16 1033232416 x5 =13.4 3x50.3=4.52041x8)6.2(x2x - x = 4 x638 5 x = x = 523101921854x = x = x + x = 4 x 73 x12 54281537216x -25% x=10 x x = x = 4x3 9 = 29 21874398615x0.25= 4+0.7x =102 x + x =42 413
2、218341x4x6 =2 x = 9x 0.79 8.84 x =403251033x 12 3x = x = 70%X+20%X = 3.6 324187216x x121 25% + 10 x = x - 0.8 x = 16+6 x x4= 83545421 20 x 8.5= 1.5 x 25% x =90 (x-32) 5=115 x324x x = 2x + =7243534解比例:x:10= : 0.4:x=1.2:2 =413 4.21x3: = :x 0.8:4=x:8 :x=3:122154 431.25:0.25=x:1.6 = =92x8x3654x: =6: = 4
3、5:x=18:263254x5.4262.8:4.2=x:9.6 :x= : 2.8:4.2=x:9.610845x:24= : 8:x= : : =x: 431543856120642.4 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 4.60.2 8x 38 x64解方程6X X= 2X + = 70%X + 20%X = 3.627 4325 35X =20 25% + 10X = X - 15%X = 68534154X X121
4、5X3 X 1283215732416X5 =13.4 3X=8341X83X = X X= 4X6 =27216874332X= X = X = 125 310 5372986157X = 4x3 9 = 29 x + x = 4356421 216X21 =4 10322041x 8)6.2(x6X5 =13.4 X- X= 463825 13 3105X= X= X =1952185454281X =12 X= X= 3241537298615X = X-0.25= =30% 356421414X4+0.7X=102 X+ X=42 X+ X=105321418X- X=400 X-0.
5、125X=8 = 83 X364X+ X=18 X( + )= x0.375x= 37 16 38 1312 65x + =4 X 73X12 5 X2.45832180.365- 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 459X25%X=90 X X= X X= 37 89 27 432X + = 70%X + 20%X = 3.6 X =2025 35 54125% + 10X = X - 15%X = 68 X X121 54 835X3 X 12 6X5 =13.4
6、 215732413X= X = 8341X83721610X X= 4X6 =2 X= 874332125 310X = X = X = 5372986153564214x3 9 = 29 x + x = 4 X21 =4 21610326X5 =13.4 2041x 8)6.2(xX- X= 4638 5X= 25 13 310 19511X= X = X =12 21854542813241X= X= X = 537298615356421X-0.25= =30% 4+0.7X=102 414XX+ X=42 X+ X=105 X- X=400 3214183X-0.125X=8 = X
7、+ X=18 X36437X( + )= x0.375x= x + =4 16 38 1312 65321812X 73X12 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 = 53415413X - 15%X = 68 X X121 5X3 8321573X=834183X = X X= 4X
8、6 =27216874332X= X = X = 125 310 537298615X = 4x3 9 = 29 x + x = 4356421 216X21 =4 10322041x 8)6.2(x146X5 =13.4 X- X= 463825 13 3105X= X= X =1952185454281X =12 X= X= 3241537298615X = X-0.25= =30% 562414X4+0.7X=102 X+ X=42 X+ X=10532141X- X=400 X-0.125X=8 = 83 X364X+ X=18 X( + )= x0.375x= 37 16 38 1312 6515x + =4 X 73X12 5 X2.45832180.365- 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 45
