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= (60 + 12): 3 = = (40 + 10): 2 =
= 60: 3 + 12: 3 = = 40: 2 + 10: 2 =
= 20 + = 24...■ = 20 + 5 = 25
39: 3- =
= (30 + 9): 3 = = 30: 3 + 9: 3 = = + 3= 13
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III. .
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1) : 64: 2; 48: 4; 99: 3. .
2) 48: 4, :
48: 4 = (40 + 8): 4 = 10 + 2 = 12; 48: 4 = (20 + 28): 4 = 5 + 7 = 12; 48: 4 = (24 + 24): 4 = 6 + 6 = 12.
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2. . .
72:3 | = | |||
= (60 | + 12): 3 = | |||
= 60: | 2+ 12: 3 = | |||
= 20- | 1-4 = 24 | |||
50:2 = | ||||
= (40 + | ) | :2 = | ||
= 40 + | + | 10:2 = | ||
= 20 + | = | |||
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2) . 60: 4 96: 4 51: 3 90: 5
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32 , 2 , 6 , . ? 188
VIII. 101-1000. 䳿 1000
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42: 3 100 - 80: 4 90: 3: 5 360 + 40: 4
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VIII. 101-1000. 䳿 1000
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13:3 = 4(. 1) 18: 4 = 4 (. 2) 13: 5 = 2 (. 3) . , . . : 13 12 1, 1; 18 16 2, 2; 13 10 , 3.
1 . : 27: 3 28: 3; 15: 5 17: 5; 36: 4 38: 4. ϳ , , . , , . 1 , . , 5 4, : 1, 2, 3 4. :
4 = 3 16
4 = 3 (. 1) 17
4 = 3 (. 2) 18
4 = 3 (. 3) 19
12 13 14 15
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9:4 = 2 (. 1)
10: 4 = 2 (. 2)
11:4 = 2 (. 3)
' , , . . , 31: 7 = 4 (. 3). : 7-4 = 28,28 + 3 = 31.
4 = 4
4 = 4 (. 1) 4 = 4 (. 2) 4 = 4 (. 3)
29. 1000
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VIII. 101-1000. 䳿 1000
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12:3 = 4 16:4 = 4 10:5 = 2
13:3 = 4(. 1) 18: 4 = 4 (. 2) 13: 5 = 2 (. 3) . , . . : 13 12 1, 1; 18 16 2, 2; 13 10 , 3.
1 . : 27: 3 28: 3; 15: 5 17: 5; 36: 4 38: 4. ϳ , , . , , . 1 , . , 5 4, : 1, 2, 3 4. :
4 = 3 16
4 = 3 (. 1) 17
4 = 3 (. 2) 18
4 = 3 (. 3) 19
12 13 14 15
8:4 = 2
9:4 = 2 (. 1)
10: 4 = 2 (. 2)
11:4 = 2 (. 3)
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4 = 4
4 = 4 (. 1) 4 = 4 (. 2) 4 = 4 (. 3)
29. 1000
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