( 275 )
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. 2-5 |
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2 - . . - 1-4 . .
...
48 - . .
49 -
50 - . 2-5
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2 - . . - 1-4 . .
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39 -
40 -
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42 - .
43 - . 2
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1. 11
, 10, , , , 11
, 63 11. , 11
6_3
6_(6+3)_3
6311=693
, ,
7911=
7_(7+9)_9
(7+1)_6_9
7911=869
2. , 5
, 5, . 25,
4545=4(4+1)_25=2025
3. 5
5 , , 5
2. , 0 , , 5
12485=(12482)_(0 5)=624_(0 5)=6240 ( 2 )
44695=(44692)_(0 5)=(2234.5)_(0 5)=22345 ( 2 )
4. 4
, , 4, , , . 4, 2, 2
674=6722=1342=268
,
5. 15%
15% - , , . 10% ( 10) 10%.
15% 884 =(10% 884 )+((10% 884 )2)=88.4 + 44.2 = 132.6
6.
, , ,
32125
16250
8500
41000=4000
7. 5
5 . , , 2
1755
2 1752=350
35.0 35
12445
2 12442=2488
248.8
8. 1000
, , 9, , 10
1000-489=(9-4)_(9-8)_(10-
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5 , , 5
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http://11book.ru/1-klass/109-matematika/1373-matematika-1-klass-moro
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