: 1) ;
2) .
3) ;
4) ;
5)
1.
2.
3.
4.
() 1, 6*.
1.
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7 ,
- 12 , 7 (19 ).
6 *. . . , 5 6 , 168 , 16 8 .
3. ) 5 004 001; ) 2 030 000; ) 42 005; 3002.
5.
() 2, 3, 4, 5, 7, 8, 9, 10.
8.
2880 .
?, 3 .
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2880 : 3 = 960 () ( ).
.
8000 96 0 4 = 4160()
8000 - (2880 + 960) = 4160 ()
8000 - 2880 - 960 = 4160 ()
8000 - 960 - 2880 = 4160 ()
9. 90; 850; 400; 200; 800; 0.
10. ,
4 (8 ),
.
16 2 (4 4 = 16).
4 .
4 2 (16 : 4 = 4). , ,
.
8 2.
) 11, 12.
11.
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300 40 ∙ 3 = 180 (.)
( 8).
7.
8.
42
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: 1) ;
2) .
3) ;
4) ;
5)
1.
2.
3.
4.
() 1, 4, 5*.
1. ) ). .
4. . . :
2*37 < 2845 (0, 1, 2, 3, 4, 5, 6, 7, 8).
*1*3 > 6132 ( 6, 3,4, 5, , 7, 8, 9; 7, 8, 9, ).
**** > 5263 ( , 7, 8, 9; 5, 3, 4, 5, 6, 7, 8, 9; 5 2, 8, 9; 5, 2, 6, 4, 5, 6, 7, 8, 9).
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4486 < 44*1. , , 9.
5*. 2 . (8 - 6 = 2.) 5 . (10: 2 = 5.)
5.
() 2, 6, 3, 7.
2. . , , . :
) 8
5 . }?
, 8 5 : 8 + 5 = 13 (.).
3. x = 467; = 1.
6.
) 24: 4 + 24 = 30; ) (15 + 25): 5 + 220 = 228;
6)720: 8 + 9 = 99; ) (480 + 15): 3 = 165.
) 8, 9.
8. 30 1410 (1 410 ).
7.
8.
43
