1 (. 4)
.
2 (. 4)
. : 24 4 24 :
244 = 24 + 24 + 24 + 24;
7= 7+7++7
3 (. 4)
) , . ?
) , . ? : .
4 (. 4)
5 (. 5)
, ( ) , .
? ? ? ?
1) 60 + 50 =110 (/)
2) 110 3 = 330 ()
3) 100 + 330 = 430 ()
1) ?
2) ?
3) ?
7. : 8, 9, . 5
8 (. 5)
1 = 60
10 12 .
60 ? .
12 (60: 10) = 72 (.)
9 (. 5)
180; 14; 24983; 87947.
:
: ; .
2.
, .
3 .
112 123 144
134 156 192
183 164 126
184 172 133
154 147 128
132 193 173
145 166 184
:
) 360 , 80 , . ?
) 100 , 30 . .
) 4 000 . , 800 /?
*) , , 9 . 11 . ?
3 (. 6)
10 = 720;
= 72.
7* (. 7)
.
10 _______________________
19 _______________________
23 _______________________
I.
1) 10 + 19 + 23 = 52 (.) ;
2) 52 : 2 = 26 (.) ;
3) 26 - 10 = 16 (.) ;
4) 26 - 19 = 7 (.) ;
5) 26 - 23 = 3 (.) .
II.
1) 19 + 23 = 42 (.);
2) 42-10 = 32 (.)
3) 32:2 = 16 (.);
4) 19-16 = 3 (.);
5) 23-16 = 7 (.).
|
|
|
1 (. 6) -
) 0, 0; 1, 1 (1 = 11); 2, 2, 1 (2 = 2 1);
3 = 31 = 13; 4 = 41 = 14 = 22; 5 = 51 = 15.
) 1 + 1 +... + 1 = 150;
) 0 + 0 + 0 + 0 + 0 + 0 + 0 = 0.
2 (. 6)
8 (. 7) -
. :
1201 + 18 = 138; 206-19 = 101; 2780 + 999 = 999 . .
4 (. 6)
| 4 | ? | ? | |
| 4 | ? | ? |
1) 4 + 5 = 9 (.) ;
2) 207: 9 = 23 (.) ;
3) 23 5 = 115 (.) (4 );
4) 23 4 = 92 (.) 207 - 115 = 92 (.) (4 ).
5 (. 6)
, : ; : 3 = 230 215; 3 = 15. . : = 15: 3; = 5 . .
6 (. 7)
1) 15 5 = 75 (2) ( );
2) 3 3 = 9 (2) ;
3) 75 - 9 = 66 (2) .
7. : 9, 10, . 7
9.
48: 6 = 8 ();
100 8 = 800 () ;
48: 8 = 6 ();
100 6 = 600 () .
:
: ; .
2.
:
1430 1350 1330
1318 1412 1560
2320 4320 3420
5710 8910 9210
1350 1410 1260
1720 1830 1940
5 (. 9)
9999 + 100 + = 10 099; = 0.
:
) . 18 , 2 , . ? ?
) 2 , 16 . ?
) , 50 , 30 .
*) 5 . 1 . ?
4* (. 9)
: , 5 . , 60 , 300 ( 60 ).
