10.
1. 5 1. ...........................................
2. 8 3. ................
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2 + 1 = 4 5 3 = 2 4 + 1 = 5 4 3 = 1
1 + 3 = 4 3 1 = 1 2 + 3 = 4 3 2 = 2
.
2 5 7 9 6 4 7 8 4 3
10.
1. 5 1. ...........................................
2. 8 3. ................
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2 + 1 = 4 5 3 = 2 4 + 1 = 5 4 3 = 1
1 + 3 = 4 3 1 = 1 2 + 3 = 4 3 2 = 2
.
2 5 7 9 6 4 7 8 4 3
10.
1. 5 1. ...........................................
2. 8 3. ................
. .
2 + 1 = 4 5 3 = 2 4 + 1 = 5 4 3 = 1
1 + 3 = 4 3 1 = 1 2 + 3 = 4 3 2 = 2
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2 5 7 9 6 4 7 8 4 3
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2 + 2 = 1 + 7 = 7 3 = 3 1 =
4 + 3 = 8 + 2 = 5 2 = 10 2 =
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2. , 7.
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2 + 2 = 1 + 7 = 7 3 = 3 1 =
4 + 3 = 8 + 2 = 5 2 = 10 2 =
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1. 3 8 ..........
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3 + 2 = 5 + 3 = 7 2 = 8 1 =
2 + 7 = 4 + 3 = 6 2 = 9 4 =
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5 2 . ?
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5 . 2 . ?
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2 5 4 3 2 7 6 5 8 8
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1. 3 8 ..........
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3 + 2 = 5 + 3 = 7 2 = 8 1 =
2 + 7 = 4 + 3 = 6 2 = 9 4 =
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5 2 . ?
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5 . 2 . ?
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2 5 4 3 2 7 6 5 8 8
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3 + 5 = 4 + 3 = 6 2 = 5 0 =
7 + 2 = 2 + 0 = 9 6 = 9 5 =
2 + 6 = 5 + 2 = 8 7 = 6 3 =
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5 , 2 . ?
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2 + = 5 + 3 = 9 9 4 = 1 - = 1
+ 1 = 10 4 + =7 - 6 = 3 8 - = 5
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( 1)
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
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9 1 = 8 3 = 0 + 2 =
8 + 2 = 6 + 3 = 1 1 =
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10 1 6 6 8 9 5 3
4. 4 , 2 .
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2 2 = 6 2 = 8 1 =
1 + 0 = 7 + 2 = 10 2 =
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10 9 4 6 4 4 8 1
4. 5 , 2 .
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( 1)
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9 , 3 . ?
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9 3 = 5 + 3 = 2 + 3 =
7 + 2 = 6 3 = 10 2 =
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8 1 3 + 2 3 + 1 2 =
9 + 1 2 3 + 1 + 2 3 =
10 , , , .
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( 2)
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7 . , 3 . ?
充
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9 2 = 3 + 3 = 8 3 =
6 + 3 = 4 + 2 = 10 3 =