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หน่วยที่ 1-ตัวประกอบ-ป.6.doc

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6 5 59

4

1 11 2 17 3 16 4

15 5 59 6

6 1

11

1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 ... ... 1 1

11 6

1 1 1. 1.4 .6/1 - 2

2. 1. /1. 2. /1. 2. 3. 3. 1. 1. 45 9= (2. 60 7= (3. 64 8 = (4. 56 6 = (5. 89 10= (6. 84 12 = ( 0 2. 0 3. 3 4 4. 5. 6. 3 12 3 12 2 3 7. 2 6 48 (6 48 48 ( 6 = 8)7 49(7 49 49 ( 7 = 7)8. 6 1 6 6

6 (1, 2, 3 6) 6 () 6 ( 4 1, 2, 3 6) 6 ( 1 6 6 )9. 2 3 10. 11. 1 /12. 4. / 1. 1 5. / 1. 2. 3. 1 4. 5. 6. 6.

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45 ( 950 ( 940 ( 9

48 ( 1245 ( 542 ( 7

45 ( 1144 ( 1172 ( 8

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: 36

1 : 1. 14

2. 16

3. 20

4. 26

5.33

6.36

7.65

8.72

9.80

10. 99

2 1 1.

1.4 .6/1 - 2

2. 1.

2. /1. 2. /1. 2. 3. 3. 1.

2. 7, 15, 22, 30 7 2 1, 711 2 1, 1122 4 1, 2, 11, 2230 8 1, 2, 3,5,6,10,15,303. 2 4. 2 1 5. 4 5 19 ( 1 19 )

51 ( 1, 3, 17 ,51 ) 6. 7. 18

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3.

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2. 1. /1. 2. /1. 2. 3. 3. 1. 20 20 1, 2, 4, 5, 10, 20 20

2. 20

3. 2 3 4. 18 = 2 ( 9

( 9 9 9 = 3(3) 18 18 = 2 ( 3 ( 3

5. 18 18 = 3 ( 6 6 6 = 2 ( 3

18 18 = 2 ( 3 ( 3

6. 2 3 7. 8. 1) 9 = 3 ( 3

2) 20 = 4 ( 5

3) 25 = 5 ( 5

4) 36 = 4 ( 3 ( 5

5) 45 = 5 ( 3 ( 3

9. 17, 29, 43, 59 () () ( 1 1 ) () ()10. 11. 3 /12. 4. / 1. 3 5. / 1. 3 2. 3. 4. 6.

1. 2. 3 1. 2.

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4 1 1.

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2.

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2) 12 2 12 6

3) 6 2 6 3

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1. 2. 4 1. 2.

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4 : 11.

2. 45

3. 50

4. 60

5. 72

6. 90

7. 100

8. 180

9. 315

10. 240

11. 600 2 1) 257=

2) 253=

3) 2332=

4) 2352=

5) 2435=

6) 22311=

7) 253=

8) 22353=

5 1 1. 1.4 .6/1 - 2

2. 1. ... /1. 2. /1. 2. 3. 3. 1. 2. 2 16 1,2,4,8,16

24 1,2,3,4,6,8,12,2416 24 1,2,4,8 16 24 8 3. ... 4. 3 ... ... 1. 10 , 12, 16

2. 18, 20 , 24

3. 16, 24, 32

5. ... 5 ...4. / 1. 5 ... 5. / 1. 2. 3. 5 ... 6.

1. 2. 5 ...1. 2.

7. / 8.

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()

(...................................................)

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2) 18 30

3) 18 244) 9, 12 285) 84 60

: ... 1 2 3 4 5 4

6 1 1.

1.4 .6/1 - 2

2. 1. ... /1. 2. /1. 2. 3. 3. 1 ... 3 ...2 ... ... 16 24

16 24

16 = 2 ( 2 ( 2 ( 2

24 = 2 ( 2 ( 2 ( 3 16 24 2 ( 2 ( 2 = 8

... 16 24 8

... 2 ...3 6 1 ... /4 ...

5 6 2

4 / 1. 6 ... 5 / 1. 2. 3. 6

1. 2. 6 ...1. 2.

7 / 8

()

(...................................................)

()

9

()

(...................................................)

()

6 ... 1 .. 1. ... 12 36

24=.

36=.

... 24 36 ..

2. ... 35 , 49 56

35 =.

49=.

56=.

... 35 , 49 56 ..

3. ... 8 , 12 , 18 24

8=

12=

18=

24=

... 8 , 12 , 18 24

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16=

32=

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64=

... 16 , 32 , 48 64 ..

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2) 45 60

3) 30 45 4) 21, 28 49

5) 50 , 70 90

7 1 1.

1.4 .6/1 - 2

2. 1. ... /1. 2. /1. 2. 3. 3. 1. ... 1 2 ... ... 2

... 24, 36

) 24 36 24 36 ( 2 3 )

2. 12 18 8 12 6 9 4 6

3. 2 3 () 24 36 ( 2, 3, 2)4. 24 36 2 ( 2 ( 3 3 ( 2 ( 2 24 36 () 24 36 2 ( 2 ( 3 3 ( 2 ( 2 () ... 24 36 (2 ( 2 ( 3 = 12 3 ( 2 ( 2 = 12)

5. 6. ... 24 36 ... 24 36 12 7. ... 4 ... 12 36 72 2 1) 2)

8. ... 12 ... 9. 4 ... 10. 7 /11. 4. / 1. 7 2. ...5. / 1. ...2. 3. 6.

1. 2. 7 1. 2.

7. / 8.

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8 1 1.

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2, 4, 6, 8, 10, 12, 14,

2

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3

4, 8, 12, 16, 20, 24, 28,

4

5, 10, 15, 20, 25, 30, 35, 5

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4 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48,

3 4 12, 24, 36,

3 4 12 ... 3 4 12

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4. / 1. 8 ...

5. / 1. 2.

6.

1. 2. 8 ...1. 2.

7. / 8.

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... 9, 18, 24

9 1 1.

1.4 .6/1 - 2

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2. ... ... 12 18 12 18 12 ( 2 ( 2 ( 3

18 ( 2 ( 3 ( 3

... 12 18 2 ( 3 ( 2 ( 3 ( 36

... 2 3 3. 2 3 ... 2 3 ... 2 1 ... 16 24

2 ... 28, 35 424. 9 ... /5. 9 ... 1- 2 ...

4. / 1. 9 ...

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6.

1. 2. 9 ...1. 2.

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... : ...

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10 1 1.

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2. 1. 2 3 ... /1. 2. /1. 2. 3. 3. 1. ... ... 2. ... ... ... 12 18

12 18 ( 2 3 )

1. 6 9 4 6 2. ... 12 18

( ... )3. ... 4 ... 6 9 12

...

... 3 ( 2 ( 1 ( 9 ( 2 = 108

2, 3 4 2 2 4 3 2 3

1, 3 2 ... 6 , 9 12

4. ... 16, 24 32

5. ... 16, 24 32 ... 16, 24 32 96 3. 10 ... /4. .. 3 4. / 1. 10 ... 5. / 1. 2. 3. 6.

1. 2. 10 ... 1. 2.

7. / 8.

()

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()

(...................................................)

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10

... : ... 1. 9 27

2. 16 48

3. 30 45

4. 8, 28 72

5. 12, 35 65

6. 30, 48 72

11 1 1.

1.4 .6/1 - 2

2. 1. ... ... /1. 2. /1. 2. 3. 3. 1. ... 2 1 ... ... ...

2 ... ... ... ...

2. ... ... 1 60 72

... 60 72

60 ( 2 ( 2 ( 3 ( 5

72 ( 2 ( 2 ( 3 ( 3 ( 2

... 60 72 2 ( 2 ( 3 ( 12

9 60 ( 12 ( 5 72 ( 12 ( 6 12 ( 12

5 ( 6 = 30 9 30 2 9 12 20 ... 9, 12, 20 491220

3935

315

180

3. 11 1 3/4. 11 1 3 ... ... 11 2 4 4. / 1. 11 5. / 1. 2. 3. 6.

1. 2. 11 1. 2.

7. / 8.

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... ...

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1. 18 24

2. 3 24, 72 54

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1 2 3 4 5 6 7 8 9 10 11

1

2

3

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7

8

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10

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13

14

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1.

2.

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5.

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7.

8.

9.

10.

11.

12.

13.

14.

15.

1. 4 1 80

3 1 60 79

2 1 50 59

1 1 50

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4. 2 2 50 59

5. 1 2 50

6. 4 3-4 80

7. 3 3-4 60 79

8. 2 3-4 50 59

9. 1 3-4 50

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11. 3 5-7 60 79

12. 2 5-7 50 59

13. 1 5-7 50

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15. 3 8-10 60 79

16. 2 8-10 50 59

17. 1 8-10 50

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1. 4

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1

: 1. 18

2. 35

3. 97

4. 57

5. 42

6. 51

7. 60

8. 76

9. 180

10. ... 54 72

11. ... 8, 28 48

12. ... 7, 8, 9 10

13. ... 18 30

14. ... 8, 12 36

15. ... 3, 4, 5 7

2 1. ... 36, 54 902. ... 4, 6, 10 123. 21 48

1

6 11

1.4 ... ... ... ... ... ...

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4 ...

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15

16

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90

68

18

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56

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82

2 ) 24

12

24 = 2 12 12

24 = 2 12

= 2 2 6 6

2 ) 24

2 ) 12

6

24 = 2 12

= 2 2 6

= 2 2 2 3 3 24 = 2 2 2 3

2 ) 24

2 ) 12

2) 6

3

3) 24 36

8 12

2) 24 36

12 18

2) 24 36

2) 12 18

6 9

3) 24 36

2) 8 12

4 6

3) 24 36

2) 8 12

2) 4 6

2 3

2) 24 36

2) 12 18

3) 6 9

2 3

3) 24 36

2) 8 12

2) 4 6

2 3

... 24, 36

3 ( 2 ( 2 = 12

2) 24 36

2) 12 18

3) 6 9

2 3

... 24, 36

2 ( 2 ( 3 = 12

12) 12 36 72

1 3 6

... 12, 36, 72 12

4) 12 36 72

3) 3 9 18

1 3 6

... 12, 36, 72

4 ( 3 = 12

2) 12 36 72

2) 6 18 36

3) 3 9 18

1 3 6

... 12, 36, 72 2 ( 2 ( 3 = 12

3) 12 18

4 6

2) 12 18

6 9

3) 12 18

2) 4 6

2 3

2) 12 18

3) 6 9

2 3

2) 12 18

3) 6 9

2 3

... 12 18

2 ( 3 ( 2 ( 3 = 36

3) 12 18

2) 4 6

2 3

... 12 18

3 ( 2 ( 2 ( 3 = 36

3) 6 9 12

2 3 4

3) 6 9 12

2) 2 9 4

1 9 2

3) 6 9 12

2) 2 3 4

1 3 2

3) 6 9 12

2) 2 3 4

1 3 2

... 6, 9 12

3 ( 2 ( 1 ( 3 ( 2 = 36

4) 16 24 32

2) 4 6 8

2) 2 3 4

1 3 2

... 16, 24 32

4 ( 2 ( 2 ( 1 ( 3 ( 2 = 96

8) 16 24 32

2) 2 3 4

1 3 2

... 16, 24 32

8 ( 2 ( 1 ( 3 ( 2 = 96

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