1000 10 100. , 10 100.
1000 , :
1000x2=1000+1000=2000
1 .2=2 .=2000 1000x5=1 . 5=5 .=5000
1000 . , , , :
1000, . 234
, 3x1000.
1000, 10, 100, -. , . 11 : 8000 . . 1000 . ? . ()00 : 1000 . 8 . 1 . (8 .:1 .), , 8. 8000 : 1000 =8 ().
. -' 10
100.
, .
10, 100, 1000 (42 000:1000=42) . , : 80: 10=8 800: 100=8 8000: 1000=8
85: 10=8 (. 5)
807: 100=8 (. 7)
8507: 1000=8 (. 507)
870: 100=8 (. 70)
, . , . :
3800:100=38.
. 38 100=3800. 7518:1000=7 (. 518). . 7x1000+518=7518.
, 10, 100, 1000, , , , . , . : 3800x10. 380.
3856:10 . . 38 560.
, , ! , , .
10, 100, 1000 , , ( , ), , , : 4700:100x1000.
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(, , )
. , , 10, 100, 1000. , (, 20=2-10, 500=5-100, 6000=6-1000), (, 24 12-20= 12-(2-10)=(12-2)-10=24-10=240), 30 : , 720 , . . 10.
10 000, 100 000 1 000 000. , - : 25 - 300=25 - 3 100=75 100=7500.
.
: 7x5000. 5000 5-1000. 7 - (5 - 10007 5) -1000=35 -1000=35 000.
. . 236
1000 . , 10, 100, 1000 , , , (30=3-10, 100=3-100, 3000=3-1000), .
400:20=400:10:2=40:2=20
, , :
2500:500=2500:100:5=25:5=5;
250 000:5000=250 000:1000:5=250:5=50.
, . : 670:40. . 1, 1 40. 6740=27. 270 40. 270 40 10. : 27:4. 6. 6 40, 240. . 30 ( 40), 16.
, :
825000 "6000 | 3000 275" |
22500 "21000 | |
15000 "15000 |