.
2- , 3- . ϳ 2- :
- 䳿 : 2 * 4 = 2 + 2 + 2 + 2 = 8.
- 䳿 : 3 * 2 = 2 * 3 = 6.
- : 3 * 7 = 3 * 6 + 3 = 18 + 3 = 21.
- : 3 * 9 = 3 * 10 3 = 30 3 = 27.
- : 2 * 8 = 2 * 4 + 2 * 4 = 8 + 8 = 16.
ֳ . : .
5.
ϳ - : 2 * , 3 * , 2. 3, 4, 5, 6, 7, 8, 9. , 5:
5 * 2
5 * 3
5 * 4
5 * 5
5 * 6
5 * 7
5 * 8
5 * 9
䳿 , , :
5 * 2 = 2 * 5 = 10
5 * 3 = 3 * 5 = 15
5 * 4 = 4 * 5 = 20
, :
1) 䳿 : 5 * 5 = 5 + 5 + 5 + 5 + 5 = 25;
2) : 5 * 5 = 5 * 4 + 5 = 20 + 5 = 25;
3) : 5 * 5 = 5 * 6 5 = 30 5 = 25;
4) : 5 * 6 = 5 * 3 + 5 * 3 = 15 + 15 = 30
:
5 * 2 = 10
5 * 3 = 15
5 * 4 = 20
5 * 5 = 25
5 * 6 = 30
5 * 7 = 35
5 * 8 = 40
5 * 9 = 45
:
- . (³ .)
- ?
5 * 2 = * =
5 * 3 = * =
5 * 4 = * =
- : 10 15, 15 20.... ? ( 5 .)
- ? ( , 1. , , . , 5 .)
- 5, ? ( 5.)
|
|
- , 5 5. (5 * 6, 5 * 7, 5 * 8, 5 * 9) , .
5 * 5 = * + = + =
5 * 6 = * + = + =
5 * 7 = * + = + =
5 * 8 = * + = + =
5 * 9 = * + = + =
- ? ( 5.)
- 5 10. ? ( 5 10, .)
- , 5 9. (5 * 8, 5 * 7, 5 * 6, 5 * 5) .
5 * 10 =
5 * 9 = * - = - =
5 * 8 = * - = - =
5 * 7 = * - = - =
5 * 6 = * - = - =
5 * 5 = * - = - =
- 5 2, 3, 4 䳿 ! ? ( 2, 3, 4 .)
- , :
5 * 5 = + + + + = * + * =
5 * 6 = + + + + + = * + * =
5 * 7 = + + + + + + = * + * =
5 * 8 = + + + + + + + = * + * =
|
|
5 * 9 = + + + + + + + + = * + * =
5 :
1. 5 : .
2. 5 : .
3. - 5.
4. :
5 * 2 = 10
5 * 4 = 20
5 * 6 = 30
5 * 8 = 40
- 5? (5 2, 4, 6, 8 .)
- ? ( , , .)
- ? ( 2, 4,6, 8 ( ) , .)
. 3, 5,7, 9 ( ) , 5!
5. : 25, 40, 15, 35, 10, 45, 52, 20, 30.
6. ? ϒ ! , ? (5 * 4 = 5 * 5 5 = 25 5 = 20, 5 * 6 = 5 * 5 + 5 = 25 + 5 = 30.)
7. 5 * 9 ? ? (5 * 10 = 50. 5 * 9 = 5 * 10 5 = 50 5 = 45.)
8. 䳿 ? (5 * 2 = 2 * 5 = 10, 5 * 3 = 3 * 5 = 15, 5 * 4 = 4 * 5 = 20.)
9. . ? , 5 * 6? 5 * 7? 5 * 8?
(5 * 6 = 5 * 5 + 5 = 25 + 5 = 30 5 * 6 = 5 * 3 + 5 * 3 = 15 = 15 = 30.
5 * 7 = 5 * 6 + 5 = 30 + 5 = 35 5 * 7 = 5 * 3 + 5 * 4 = 15 = 20 = 35.
5 * 8 = 5 * 7 + 5 = 35 + 5 = 40 5 * 8 = 5 * 9 5 = 45 5 = 40
5 * 8 = 5 * 4 + 5 * 4 = 20 + 20 = 40.)
10. , 5 * 7 = 35. (5 * 7 = 5 + 5 + 5 + 5 + 5 + 5 + 5 = 35.)
11. : 5 * 8 5 * 6 + 5...
:
1. 5 * 2 = __ 12: 4 = __ 3 * 5 = __ 14: 2 = __ 5 * 7 = __ 4 * 9 = __ 21: 3 = __ 2 * 8 = __ 32: 4 = __ 3 * 6 = __ 5 * 8 = __ 8: 2 = __ 5 * 5 = __ 9: 3 = __ 4 * 5 = __ 20: 2 = __ 1 | __ * 4 = 16 27: __ = 9 2 * __ = 9 __ * 3 = 15 __: 4 = 7 5 * __ = 45 __ * 8 = 24 12: __ = 6 3 * __= 12 __ * 10 = 30 __ * 6 = 30 __: 3 = 4 5 * __ = 20 __: 4 = 10 20: __ = 5 __: 9 = 4 3 * __ = 21 | 2. 5 * 3 = __ 16: 4 = __ 3 * 9 = __ 18: 2 = __ 5 * 9 = __ 4 * 7 = __ 24: 3 = __ 2 * 6 = __ 24: 4 = __ 4 * 3 = __ 5 * 6 = __ 10: 2 = __ 5 * 4 = __ 4 * 10 = __ 30: 3 = __ 6: 2 = __ 2 | 4 * ___ = 32 __ * 7 = 21 5 * __ = 35 16: __ = 8 __: 4 = 9 2 * __ = 20 __ * 2 = 10 18: __ = 6 __ * 4 = 12 5 * __ = 40 __ * 7 = 14 5 * __ = 50 __ * 2 = 4 __ * 5 = 25 __: 2 = 10 4 * __ = 16 __: 3 = 9 |
, , ( , !).
. : ; . , .
, :
5 * 2 = ____________=
5 * 3 = ____________=
5 * 4 =___________=
5 * 5 =
5 * 6 =____________=
5 * 7 =____________=
5 * 8 =___________=
5 * 9 =____________=
| 10: 5 =, .. * 5 = 10
*
15: 5 =, .. * 5 = 15 * 20: 5 =, .. * 5 = 20 *
25: 5=, .. * 5 = 25 * 30: 5 =, .. * 5 = 30 *
35: 5 =, .. * 5 = 35 * 40: 5 =, .. * 5 = 40 * 45: 5 =, .. * 5 = 45 *
| 10: 2 =, .. * 2 = 10
*
15: 3 =, .. * 3 = 15
*
20: 4 =, .. * 4 = 20 *
25: 5=, .. * 5 = 25 * 30: 6 =, .. * 6 = 30 *
35: 7 =, .. * 7 = 35 *
40: 8 =, .. * 8 = 40 * 45: 9 =, .. * 9 = 45 *
|
, : 15: 5 , 5 15 3.
. ij, 䳺 :
5 * 6 = __ 32: 4 = __ 3 * 9 = __ 16: 2 = __ 40: 5 = __ 4 * 7 = __ 18: 3 = __ 2 * 6 = __ 5 * 4 = __ 24: 4 = __ 3 * 7 = ___ 10: 2 = __ 25: 5 = __ 1 | 5 * 9 = __ 36: 4 = __ 3 * 8 = __ 14: 2 = __ 5 * 7 = __ 16: 4 = __ 24: 3 = __ 15: 5 = __ 12: 4 = __ __ * 2 = 10 20: __ = 5 __: 3 = 4 __ * 3 = 15 2 * __ = 18 | 4 * 4 = __ 25: 5 = __ 24: 3 = __ 2 * 8 = __ 5 * 6 = __ 32: 4 = __ 3 * 6 = __ 12: 2 = __ 40: 5 = __ 4 * 7 = __ 21: 3 = __ 2 * 7 = __ 5 * 4 = __ 2 | 24: 4 = __ 15: 3 = __ 2 * 9 = __ 5 * 9 = __ 36: 4 = __ 3 * 9 = __ 10: 2 = __ 35: 5 = __ 4 * __ = 20 12: __ = 4 __ * 3 = 9 __: 5 = 3 12: __ = 3 __ * 2 = 20 |
.
, :
- 1000 . , - , .
- 1 1000, , .
- : 1 , , . , 10 1 .
- , , 1 1.
- , .
- , .
- - .
- , .
- , .
- 䳿 :
- : 453 + 1, 453 1;
|
|
- : 500 + 40, 500 + 40 + 7, 500 + 7; 567 500, 567 60, 567 7.
:
- , -, -;
- ;
- .
, . . 10 - , - , .
. 10 1 , :
10 = 1 .
˳ -. 10 , , : 10 = 1
, , , . 1 10 , 10 100 , . :
100 = 1 .
, , . : 1 , 2 ... 10 .
, 10 1 :
|
:
|
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
㳿 :
: 2 -; 3 -... , , , .
ϳ , ( 2 ) , , , 1 : ... , . , , , :
, . ǒ, , . 101, , 0 . , .
. . 1, .
, , : 95 105, 157 165; : 138 = 100 + 30 + 8.
: 83 = 80 + 3, ( 83 .) , , . , ? ( , : , .) , : , , .
|
|
, : 100 + 30 + 5 = 135.
, . , , , : , . ( : ; ). :
: 2 (), 5 () 4 (). (452). , , (4 , 5 , 2 ).
: , 957. , 3 , 2 7 .
, , :
- 560, 506 ;
- ,, 7 2 .
: 1 , , , :
1 | ||
, 1 , - , - .
. , 235 236: 235 , 236, 235< 236 .
. , 205 250: 2 2 , , 0 , 5 , 0 < 5, 205 < 250.
. : 5 , 2 7 ; , . , .
, 㳿 , . :
|
, 700 400.
- : 7 . 4 .
- ³ : 7 . 4 . = 3 .
- : 3 . = 300.
700 400 = 7 . 4 . = 3 .= 300
, - . :
600 + 30 + 1
- 600 6 , 30 3 , 1 1 .
- , 6 , 3 1 631
, , .
, 627, 7 , 2 , 6 . 627 6 , 6 , 2 2 , 7 .
, :
60 = 6 . | 60 6 |
200 = 20 . | 200 20 |
260 = 26 . | 260 26 . |
, , 1 .
, , 2 .
: 345 300, 345 40, 345 5.
|
, 853 50:
- 853 8 , 5 3 ;
- 50 5 .
- 8 5 3 , 5 , 8 3 803.
- 853 50 = 803.
1000 ̳ .
1000.