1 (. 44)
.
36 009: 9 = (36 000 + 9): 9 = 4000 + 1 = 4001;
12 800: 8 = (8000 + 4800): 8 = 1000 + 600 = 1600 . .
2 (. 44)
1) 270: 10 = 27 (/) ;
2) 27-15 = 12 (/) .
/.
15 /: 15 60 = 900 /;
12 /: 12 60 = 720 /.
3 (. 44)
:
I 96 2 (128);
II 96 2 (128);
III 192 2 (16 12);
IV 112 2 (167);
V 80 2 (16 5)
7. : 9, 10, . 45
:
: ; .
2.
:
75 =...
6300 =......
54 =... ...
8 900 =...
320 =... ...
56 2 =... (560000) 2
70000 =... (70)
60000 2 =...(6)
5 3 =...
800000 2 =... (80)
8 (. 47)
2 (. 46)
4 (. 47)
: , , ; , , .
83 200: 8>80 032: 8
62 400: 6 > 60 240: 6
85 000: 2 > 85 000: 5
7 (. 47)
:
) 80 . 17 , . , ?
) 40 , 8 . 130 . ?
) 22 , 8 . 20 . ?
5* (. 47)
, , .
| 10: 10 = 1 () = 1000 | ||
| 1000: 10 = 100 () | ||
| 100 25 = 2500 () | ||
| ? | 25 = 25 000 |
1) 25 000: 2500 = 10 () . (25), 10 .
2) 1 10 = 10 ().
1 (. 46)
. .
|
|
|
3 (. 47)
( ) , 1 15 .
15 . , .
1) 20 - 15 = 5 (/) ( );
2) 15: 5 = 3 () , .
6 (. 47)
7. : 9, 10, . 47
:
: , ; .
2.
1. :
| ? |
2. . , 21: 37, 2 + 1 + 3 + 7 = 13. ?
3. . 50 + 50 + 50 . , 123 . ?
3 (. 49)
00 k = 600, , k = 6. , 6:
1) = 1, k = 6; 1006 = 600;
2) = 2, k = 3; 2003 = 600;
3) = 3, k = 2; 300 2 = 600;
4) = 6, k = 1; 6001 = 600.
6 (. 49)
207 986.
7 (. 49)
*** < **** ; 45*** < 48*** 5 < 8;
**24* > 578;
**7* < *1*2*.
5* (. 49)
, 10 5 .
10 : 5 = 2 (.) ( );
2 6 = 12 (.) 2 + 10 = 12 (.) .
: 2 , 12 .
1 (. 48)
.
12179 4559 1843
9247 33396 23423
