五年级解方程练习题50题及答案ok

五年级解方程50题有答案(1) (0.5+x)+x=9.8 - 2 (8)1.2x=81.

6

(2) 2(X+X+0.5)=9.8 (7) x+5.6=9.4

(3) 25000+x=6x (10)x-0.7x=3.

6

(4) 3200=440+5X+X (11)91 - x = 1.3

(5) X-0.8X=6 (12) X+8.3=10.7

(13) 15x = 3 (6)12x-8x=4.

8

⑺ 7.5+2X=15 (14) 3x —8= 16

(15) 3x+9=27

(29) 1.8x=0.972 (16) 18(x-2)=270

(17) 12x=300-4x

(18) 7x+5.3=7.4

(19) 3x - 5=4.8

(25) 0.5x+8=43

(26) 6x-3x=18

(27) 7(6.5+x)=87.5

(28) 0.273 - x=0.35 (30) x - 0.756=90

(31) 0.1(x+6)=3.3 X 0.4

(32) (27.5-3.5) - x=4

(33) 9x-40=5

(34) x - 5+9=21

(35) 48-27+5x=31

(36) 10.5+x+21=56

(37) x+2x+18=78

(38) (200-x) - 5=30

(39) (x-140) - 70=4

(40) 20-9x=2

(41)x+19.8=25.8

(42) 5.6x=33.6

(43)9.8-x=3.8

(44)75.6 - x=12.6

(45) 5x+12.5=32.3

(46) 5(x+8)=102

(47) x+3x+10=70

(48) 3(x+3)=50-x+3

(49) 5x+15=60

(50) 3.5-5x=2

五年级解方程50题答案

0.5+2x=4.9

0.5+2x-0.5=4.9-0.

5

五年级解方程练习题 50题及答案ok

X=12

(11)

91 - x = 1.3

91 - x x x=1.3 x x 1.3x=91

1.3x - 1.3=91 - 1.3

X=70

(12)

X+8.3=10.7 X+8.3-8.3=10.7-8.3

X=2.4

(13)

15x = 3 15x

- 15=3 - 15

X=0.2

(14)

3x - 8 = 16

3x-8+8=16+8

3x=24 3x - 3=24- 3 X=8 (15)

3x+9=27

3x+9-9=27-9 3x=18 3x - 3=18-3 3x=6 (16)

18(x-2)=270

18x-36=270 18x-36+36=270+36

18x=306 18x - 18=306 - 18

X=17 (17)

12x=300-4x

12x+4x=300-4x+4x 16x=300

16x - 16=300 - 16 X=18.75 (18)

7x+5.3=7.4

7x+5.3-5.3=7.4-5.3

7x=2.1 7x - 7=2.1 - 7 X=0.3

(19)

3x - 5=4.8

3x -5X 5=4.8 x 5

2x=4.4 2x - 2=4.4 - 2

X=2.2

(2) 2(X+X+0.5)=9.8

2x+2x+1=9.8 4x+1-1=9.8-1 4x=8.8 4x 十 4=8.8 十 4

X=2.2

(3) 25000+x=6x 25000+x-x=6x-x

5x=25000 5x - 5=25000 - 5

X=5000

(4) 3200=440+5X+X

6X +440=3200

6x+450-450=3200-440

6x=2760 6x — 6=2760 — 6

X=460

(5) X-0.8X=6 0.2x=6

0.2x - 0.2=6 - 0.2

X=30

(6) 12x-8x=4.8

4x=4.8 4x 十 4=4.8 十 4 X=1.2 (7) 7.5+2X=15 2x+7.5-7.5=15-7.5

2x=7.5 2x - 2=7.5 - 2 X=3.75 (8) 1.2x=81.6 1.2x - 1.2=81.6 - 1.2

X=68

(9) x+5.6=9.4 X+5.6-5.6=9.4-5.6

X=3.8

(10) x-0.7x=3.6

3x=24

3x - 3=24 - 3

X=8 7x+45.5=87.5

(20) 30 - x+25=85 7x+45.5-45.5=87.5-45.5

30 - x+25-25=85-25 7x=42

30 - x=60 7x - 7=42 - 7

30 -x X x=60 X x X=6

30=60x

60x - 60=30 - 60 (28) 0.273 - x=0.35

X=0.5 x=0.273 —0.35 (21) 1.4 X 8-2x=6 X=0.78

11.2-2x+2x=6+2x

11.2=6+2x (29) 1.8x=0.972

2x+6-6=11.2-6 1.8x - 1.8=0.972 - 1.8

2x=5.2 X=0.54

2x 十2=5.2 十 2

X=2.6 (30) x - 0.756=90

(22) 6x-12.8 X 3=0.06 x - 0.756 X 0.756=90 X 0.756

6x-38.4=0.06 X=68.04

6x=38.46 (31) 0.1(x+6)=3.3 X 0.4

6x - 6=38.46 十 6 0.1x+0.6=1.32

X=6.41 0.1x+0.6-0.6=1.32-0.6

(23) 410-3x=170 0.1x=0.72

410-3x+3x=170+3x 0.1x - 0.1=0.72 -0.1 170+3x=410 X=7.2

3x+170-170=410-170 (32) (27.5-3.5) - x=4 3x=240 24 - x=4

3x - 3=240 - 3 x=24 十4 X=80 X=6

(24) 3(x+0.5)=21 (33) 9x-40=5

3x+1.5=21 9x-40+40=5+40

3x+1.5-1.5=21-1.5 9x=45

3x=19.5 9x 十9=45 十9

3x —3=19.5 — 3 X=5

X=6.5 (34) x - 5+9=21

(25) 0.5x+8=43 x 十5+9-9=21-9

0.5x+8-8=43-8 x - 5=12

0.5x=35 x —5X 5=12X 5

0.5x —0.5=35 —0.5 X=60

X=70 (35) 48-27+5x=31

(26) 6x-3x=18 5x+21-2 仁31-21

3x=18 5x=10

3x - 3=18 -3 5x 十5=10 十5

X=6 X=2

(27) 7(6.5+x)=87.5 (36) 10.5+x+21=56