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1、六年級分數(shù)解方程練習題
班級 姓名 成績
25% + 10X = X - 15%X = 68
X+X=121 5X-3= X=12
6X+5 =13.4 3X=
X= X+X= 4X-6=2
X= X = X =
X = 4x-3 9 = 29 x + x = 4
X-21=4
2、
6X+5 =13.4 X-X= 4χ-6=38
5X= X= X=
X=12 X= X=
X= X-0.25= =30%
4+0.7X=102 X+X=42 X+X=105
X-X=400 X-0.125X=8 =
X+X=18 X( + )= x-0.375x=
x+=4
3、 X-X=12 5 X-2.45=8
0.365- x = (x- 4.5) = 7 x- 25%x = 10
x- 0.8x = 16+6 20 x– 8.5= 1.5 x- x -4= 21
X+25%X=90 X-X= 解:(1)(123/4+122/3)x=8/3
(9+8)x=8/3
17x=8/3
x=8/317
x=8/
4、51
( 2)7x/15=3/44/159/17
7x/15=9/85
x=9/857/15
x=27/119
(3)(151/3+152/5)x=20
(5+6)x=20
11x=20
x=2011
x=20/11
(4) 2x-3x/7=6
11x/7=6
5、
x=611/7
360[(12+6)5]
288[(26-14)8]
5006-(502-80)
(10512-635)25
864[(27-23)12]
(45+38-16)24
500-(240+386)
[64-(87-42)] 15
(845-153)1612[(49-28)7]
450[(84-48] )12
(58+37)(64-95)
95(64-45)
178-14556+42
812-700(9+3111)
85+14(14+20826)
(284+16)(512-82081
6、8)
120-36418+35
(58+37)(64-95)
(6.8-6.80.55)8.5
0.12 4.80.124.8
(3.21.5+2.5)1.6
6-1.64= 5.38+7.85-5.37=
7.20.8-1.25= 6-1.193-0.43=
6.5(4.8-1.24)=
5.8(3.87-0.13)+4.23.74
32.52-(6+9.7283.2)2.5
[(7.1-5.6)0.9-1.15] 2.5
5.4[2.6(3.7-2.9)+0.62]
126(12-7.2)-6
1267.2-6
0.681.9+0
7、.321.9
(58+370)(64-45)
420+580-642128
(136+64)(65-34523)
48.10.15-10.750.4-5.7
388+(5000-1000)
158+262+138
375+219+381+225
5001-247-1021-232
(181+2564)+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
(2130+783+270)+1017
99+999+9999+99999
7755-(2187+755)
2
8、214+638+286
3065-738-1065
899+344
2357-183-317-357
2365-1086-214
497-299
2370+1995
3999+498
1883-398
1225
7524
138254
(13125)(38)
(12+24+80)50
70425 2532125
32(25+125) 88125
10276 5898
178101-178
8436+6484
7599+275
83102-832
98199
12318-1233+85123
50(344
9、)3
25(24+16)
17899+178
7942+79+7957
7300254
8100475
16800120
301002100
32000400
49700700
124824
315015
480025
2356-(1356-721)
1235-(1780-1665)
7527+192 5
31870+13310
4(2565+2528)
(181+2564)+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
(2130
10、+783+270)+1017
99+999+9999+99755-(2187+755)
2214+638+286 3065-738-1065
899+344
2357-183-317-357 2365-1086-214
497-299
2370+1995
3999+498
1883-398
1225 7524
138254
(13125)(38)
(12+24+80)50
70425
2532125
32(25+125)
88125
10276
5898
178101-178
8436+6484
7599+27
11、5 83102-832
98199
12318-1233+85123
50(344)3
25(24+16)
17899+178
7942+79+7957
7300254
8100475
16800120
301002100
32000400
49700700
124824
315015
480025
21500125
2356-(1356-721)
1235-(1780-1665)
7527+1925
31870+13310
4(2565+2528)
1 2x+3(9-x)=21
2x+
12、3*9-3x=21
27-x=21
x=27-21
x=6
2. (1-25%)x=72
75%x=72
x=7275%
x=96
3. x-40%x=3.6
(1-40%)x=3.6
x=3.660%
13、
x=6
6. 2-﹙1/4+1/7﹚4/11
=2-11/284/11
=10/7
2x+3x=60
5x=60
x=12
3.6x-2.8x=12
0.8x=12
x=15
100x-x=198
99x=198
x=2
18x+2x=60(問題里弄成+60了 是等號吧?)
20x=60
x=3
5x+6x=12.1
11x=12.1
x=1.1
6.6x-5x=8
1.6x=8
x=5
4x-x=24
3x=24
x=8
14、
1.5x-x=1
0.5x=1
x=2
1.9x+0.4x=9.2
2.3x=9.2
x=4
25x-5x=1020-520
20x=100
x=5
80x-40=(30x+40)2
80x-40=60x+80
20x=120
x=6
80x-3200=60x+1200
20x=4400
x=220
1.5-0.06=1.44
0.7515=0.05,
0.40.8=0.32,
42035=12,
2512=300,
1350.5=270
3/4 + 1/4 =1,
3 - 2/3 =7/3,
3/4 - 1/2= 1/4
1/6 + 1/2 -1/6 =1/2,
7.5-(2.5+3.8)=1.2,
7/8 + 3/8 =5/4
3/10 +1/5 =1/2,
4/5 - 7/10 =1/10,
2 - 1/6 -1/3 =1.5
0.5117=0.03,
32.8+19=51.8,
5.21.3=4,
1.60.4= 0.64
4.90.7=3.43,
15=0.2,
612=0.5,
0.87-0.49=0.38
9