: 1) ;
2) .
3) ;
4) ;
5)
1.
2.
3.
4.
() 1, 2, 6, 5*.
1. , .
2. 10. 10 ( 10 ), . : 1420, 7240, 212 120, 111 010.
6. . . : 
(), (), (); : , , .
5*. .
 |
5.
() 4, 7, 3.
3.
 |
I.
1) 1800: 3 = 600 (.) ;
2) 3600: 600 = 6 () .
II. ? 3600: 1800 = 2 ().
, 2 : 3 ∙ 2 = 6 ().
6. () 8, 9.
8.
1) 120: 2 = 60 () ;
2) 120:4 = 30 ().
7.
8.
18
. .
: 1) ;
2) .
3) ;
4) ;
5)
1.
2.
3.
4.
() 4*.
4*. , .
 |
5.
() 1, 2, 3, 6, 5, 7, 8.
1. , , .
2. . .
6. , . . , < 1 0; < 5 0, 1, 2, 3, 4.
|
|
|
3. :
I. 1) 55 7 = 385 () ;
2) 630 - 385 = 245 () ;
3) 245: 7 = 35 (/) .
II. 1) 630: 7 = 90 (/) ;
2) 90 - 55= 35 (/) .
, ?
55 - 35 = 20 (/).
7. .
 |
32 . 1 2. , 8 2.
½, ¼, ⅛ 32, ½, ¼, ⅛ 8 2.
32: 2 = 16(.); 32: 4 = 8 (.); 32: 8 = 4 (.);
8: 2 = 4 (2); 8: 4 = 2 (2); 8: 8 = 1 (2).
8. :
26-10 = 16; 30:10 = 3;
30-29 = 1; 100:50 = 2.
) 9, 10.
9.
1)76 ∙ 7 = 532 (); 2) 532 - 180= 352 ();
3) 352 ∙ 3 = 1056().
7.
8.
19
