1、 x =54354525 5x?34?2.1.6x?6.x10x?1.1?9 类型三: 3x+5=504x-27=2x210 x=9 例3:一个长方形的周长是10.8厘米,长是4厘米,这个长方形的宽是多少厘米? 练习3: 7x?14?52x?20?418?3x?429x?3?5.42x +5% + 10x =535421 14?4x?78x124x=934 红光小学有女教师57人,比男教师的3倍还多9人。红光小学有男教师多少人? 类型四: x?5xx20 0%x+0%x =.6x23x4 练习四: 2342173x x=15x?6x?270 19x?16xx xx=7484552 233.6x
2、?3.29.4x?0.4x?16.9x?43x?9.xx10 用方程解应用题 果园里有桃树和梨树一共180棵,梨树的棵树是桃树的3倍。桃树和梨树各有多少棵? 小明的爸爸比小明大26岁,当爸爸的年龄是小明年龄的4.25倍时,小明是多少岁? 类型五:16?2?86x?14x?5?3 练习五: 34.2?7.7?52?5x?54x?1x?6 10?68?80.37?0.26?113x?8?3455%x?0.6 51213x?50%?35x?6.46256 一、解方程: .51.812.3 .622.16 23 0.841.42121 552 210 25310 7101425 52.4 23 34
3、5570 0.25 7910 1324=5 .21103.1 .661. 23 510 2 85 1806330 0.810.41.88.6 306180 5612 1 23 754 3329 61081 84105 2 381 21 255 1285=7 1.7X4.80.3X7.8 X0.24100=3X+X +10 =0 3+=57X82X2X -1=2X +3=X +0X20 12X8X1228 310=371.6X3.4XX52724X 35= 2 X 7X= 4 23314 2X += 0%X +0%X =. X25% + 10X = 545 35521 X - 15%X =8XX
4、121X3 12 834217 313327 6X=13. X? X= 4488716 123732325 XX= X=2X=10 X = 843572 1166261311 X =X =X=X + X =65126354525 321 X21=4x?86X=13.1034 1315X-X=10 X638X=1945=152314=12255X=72 62613 1X35=4525 X-0.25=44=30% 23X+12X=42X+14X=10X-3 8 X=400 36X =4X+313137X=1X=128 421 X=15 89X=1616 51 4+0.7X=102 95)X-0.1
5、25X=8 99)X0.375X=5 6 X+ XX1X2.458 3287 3321 0.365-X = = X-5%X = 10 X25%X=90X- 0.8X = 16+0 X.5= 1.5 438 X- X -4=1 X7X= 二、列方程解应用题 1、 运送29.5吨煤,先用一辆载重4吨的汽车运3次,剩下的用一辆载重为 2.5吨的货车运。还要运几次才能运完? 2、一块梯形田的面积是90平方米,上底是7米,下底是11米,它的高是几米? 六年级解方程练习题 2233 X X=X + = 0%X +0%X =.6 7554X 5% + 10X =X - 15%X =8 3 145 X38 X
6、121X6X=13.X2 = 77112X=310X 635=2645 13210X21 =6X=13.45X= 15193X14=1X 635=26 45 1325 5 3 521 5734X?134?83X=X78X=3X =5724x=9x? 120 X-13 X=10 21 X=415XX=257 X-0.25=1 1 23X1 4128 4X623 =2X = 161651 12x + 1 6x = 2?8 46384155=29X=116651 X4=30% 38 211 X+X=4 X+X=10524 336 4X X-X=400X-0.125X=8 313135 X+ X=1
7、X )=x0.375x= x2+1=43320.365-3x =x- 0.8x = 16+0 xX25%X=900.8X41.65XX25X21 X25 3102X7 10 X1421806X330.2X15X260X 68126X37 X1 X2.45231 x-5%x = 10 .5= 1. x- x -4=1 X3X= 93.5X1.812. 210 X0.25X3 4X2X15 3.6X22.17X9 38X25 1352XX10 110 X0.8X10 X3.1.4X1.88.6 162.5%-x=15/1 x+70%x=3402x/3+75%x=1/60%X +0%X =.X -
8、15%X =840%x+21=32x+20%x=3.0.5+50%x=0%x+25=404-120%x=1 x 5%x =060 x +0 5% x =x 0%x = 10x +0%x =60 x +0%x =25%x +5%x =35%x -5%x = 1x +0x -0x = 140x +0x =840%X+25%X=130 x+20%x=x+70%x=3 x-15%x=10. x+50%x=30x-40%x=122/3x-45%x=2.x-40%x=3.65%x-16=240%x+90=11 x-20%x=214%x-9.1=0.735%x+x=13.x-75%x=0.x-45%x=11
9、075%x-50=22 60%+4x=27. 1.8=2.4175=2.4+315 x =x - x =0x -5x = X=4555 +2.4=12.6 2=8 31=15 631.8=7.2 1+1.2=3. 1=32 六年级化简比 100:16.5:96.25.5:12.4:2/3 29.6:100/12023.6:1506:9 1.1:11 3.6:1.8:1/.9:0. 14:28.26 4123:41215:0.122:54312:111 10:120123:5:142:54 0.15:210:240.5:0.20.15:21 36:1813:91:1 1.01:101 21:24
10、36:720:409:5: 10.5:21.14:28.261.23:0.12 10:120 123:65: 610 0.30. 12210.251 20:50 10:12.4.6:3 1052:87 467:46. 1.1:112:69.2:40 4:9:369:2099297 3.7011121 0.4594188 3/8:4/0.45:0.18750:12500.8: 50厘米:1/4千米4小时:1小时20分.5分米:90厘米 x1.5102.5x1.2= 1.20.6x0.845 3.5: =5:4.2 +50%=413=31 .5+8=232+4.33=141231242.5 316310x:0.613 :x70.63.512: 114:813189.24112 1= 7210128x0.4 1.5 1.6:17 19 2:373 7 9 : 0.312x1418+1242110.2580: 21132523: =12:2.45 1 34235:10 7.112.29.1 : 12114:85 14:7 0.3: 7.112.5 34: :10.452=0.
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