: 1) ;
2) 11.
3) ;
4) ;
5)
1.
2.
3.
4.
() 9, 8, 2, 5*.
2. , . 1537, 1537?
2458, 4916? . .
(11, 22, 33, 32).
( ).
5*. :
 |
2 5, 10. 10, 0.
8. (): () .
9. : 10, 100 , , ; 10, 100 , , .
5.
() 1, 3, 4, 6, 7.
1. 11: ; ( ), ( 1 ,
).
11: , .
: .
3. . : 420 . 1050., 7 . ?
1) 1050+ 420 = 1470 (.);
2) 1470: 7 = 210 (.);
3) 1050:210 = 5 (.);
4) 420:210 = 2 (.).
6. . :
9: 4 = 900: 4 = (800 + 100): 4 = 200 + 25 = 225() = = 2 25 .
7. - 5 = 18; = 23 (.).
) 10, 11.
10. 25 5 = 125 (.); 125 + 25 = 150 (.);
750: 150 = 5 ().
7.
8.
108
. .
: 1) ;
|
|
|
2) .
3) ;
4) ;
5)
1.
2.
3.
4.
() 7, 6, 5, 8*.
5. 600 200 , 800 . . , 400 .
400 - 200 = 200 () 4 .
200: 4 = 50 () .
6. . . :
∙ 6<90; ∙ 6 = 90; = 15;
= 0, 1, 2, 3, 4,..., 14.
:15>9 (160, 175,...);
400:>40 (1, 2, 4, 5, 8);
+ 72<100 (0, 1, 2,..., 27).
7. : 5 > 2; 5 . , : , , , 4 , . .
5.
() 1, 2, 3, 4.
8*. 15 + 3 = 18 (.);
18: 3 = 6 (.) ;
15-6 = 9 (.) .
 |
2.
1) 96 - 64= 32 (.) , ;
2) 32: 2 = 16 (.) ;
3) 96:16= 6 () ;
4)64: 16= 4 () .
.
: 2 32 . (96 - 64 = 32.)
96 3 , 64 2 (6 4 ).
3. 19 075; 50; 290; 54 060.
4.
S1 = 8 ∙ 6 = 48 (2); S2 = 4 12 = 48 (2); S, = S2.
1 = 2 ∙ (8 + 6) = 28(); 2 = 2 (4 + 12) = 32 (); 1 < 2.
) 9, 10.
9.
(1750 + 1350) ∙ 60 = 3100 60 = 186 000 () = 186 ;
1750 60 + 1350 60 = 105 000 + 81 000 = 186 000 () = 186 .
10. 240 856 655 290 1 309 671
84 183 3 987 032 1 070 840
7.
8.
109
