คณิตศาสตร์คณิตศิลป์ 1

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คณิต

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1

() () 55(ha ha)

1+2+3++10 1 .. 2 ..

3 4 55(ha ha) ...... 1) 4+5+6++13

=

2) 6+7+8++15

=

3) 12+13+14++21

=

4) 105+106+107++114= 5) 200+201+202++209=

6) 501+502+503++510=

*** ! ? 3+4+5+14

. .. .

1

1 1

1 (/

(/2.1

1.4.1/1

6.1.1-3/1

.1-3/2

.1-3/3

.1-3/4

.1-3/5

.1-3/6

2.2

1.

2. (3.1 1. 2.

3.2 -(4.1

4.2

-

- 4.3

(

1.

2.

3. ( () 11. 4 ( 7, 9 ( 8 2. 18

3. 1 2 9 2 3 6 3 6 3 4 9 2 5 18 1

4.

- 18 1, 2, 3, 6, 9 18 ( 1 18, 2 9, 3 6,

18 )

1, 2, 3, 6, 9, 18 185.

-

18 1, 2, 3, 6, 9 186. 1.1 1 7. 8. 9. 1.1 1-4 (

60

1.1 1.1 60

2

2

(/8.1

1. .1 1

2. 1.1 8.2

1.

2. 1.1

112

224

328

432

536

645

748

850

954

1062

1189

12120

13282

14351

15506

1.1

1121, 2, 3, 4, 6, 126

2241, 2, 3, 4, 6, 8, 12, 248

3281, 2, 4, 7, 14, 286

4321, 2, 4, 8, 16, 326

5361, 2, 3, 4, 6, 9, 12, 18, 369

6451, 5, 9, 454

7481, 2, 3, 4, 6, 8, 12, 16, 24, 4810

8501, 2, 5, 10, 25, 506

9541, 2, 3, 6, 9, 18, 27, 548

10621, 2, 31, 624

11891, 892

121201, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 12016

132821, 2, 3, 47, 141, 2826

143511, 3, 9, 13, 27, 39, 117, 3518

155061, 2, 11, 22, 23, 46, 253, 5068

20

43214321432143214321

=

4

=

3

=

2

=1

17 - 2013 - 169 - 125 - 8

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

3...............................................................................4...............................................................................

5...............................................................................6...............................................................................

4321

1

2

3

4

5

.............................................................................. ......................./.........................../........................=

4

=

3

=

2

=1

17-2013-169-125-8

15