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Tiếng ViệtBox A
Box B
Box C
Box D
Box E
메모리
9
7
6
8
9
6
19
18
20
10
25
12
0
0
0
0
0
0
4
7
9
3
7
5
8
8
11
4
8
7
6
7
9
11
8
8
May 2024
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Fri, May 3
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Thu, May 30
Fri, May 31
June
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Mon, Jun 3
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Wed, Jun 5
Thu, Jun 6
Fri, Jun 7
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July
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September
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October
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November
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December
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January 2025
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February
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March
Sat, Mar 1
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April
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Tue, Apr 29
Wed, Apr 30
Box A
Box B
Box C
Box D
Box E
메모리
5
4
8
3
3
6
0
0
0
0
0
0
5
12
6
9
7
6
15
10
11
11
10
8
13
7
11
7
9
8
12
3
7
7
9
7
Box A
Box B
Box C
Box D
Box E
메모리
27
18
22
21
40
17
17
25
21
12
29
5
0
0
0
0
0
0
13
23
15
8
32
0
6
10
9
9
15
5
22
29
32
12
44
6
Box A
Box B
Box C
Box D
Box E
메모리
4
5
1
3
6
6
13
16
15
22
19
15
9
5
7
3
7
6
5
9
10
3
15
2
Box A
Box B
Box C
Box D
Box E
메모리
14
6
10
9
8
14
11
10
9
12
10
9
6
9
10
11
16
7
18
19
19
12
20
12
0
0
0
0
0
0
20
9
20
14
19
18
Addition
Need practiceMemory
| + | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 0 | |||||||||||||||||||||
| 1 | B | C | C | A | A | B | B | E | B | B | E | B | A | E | B | D | B | B | A | ||
| 2 | C | M | B | D | B | C | D | D | D | C | M | C | B | D | B | C | B | C | |||
| 3 | C | D | A | D | A | E | A | D | A | D | A | C | D | A | C | C | C | ||||
| 4 | B | B | B | E | E | B | B | B | E | A | A | B | E | B | D | A | |||||
| 5 | B | C | B | C | C | M | M | C | E | A | C | M | A | A | E | ||||||
| 6 | A | D | D | A | D | B | M | M | A | A | D | C | A | A | |||||||
| 7 | A | B | A | A | B | A | B | D | A | C | D | A | A | ||||||||
| 8 | C | M | C | D | M | M | M | D | C | B | C | C | |||||||||
| 9 | D | A | M | A | A | E | D | D | E | A | C | ||||||||||
| 10 | A | B | A | B | B | E | D | C | E | E | |||||||||||
| 11 | B | A | A | B | A | C | D | A | D | ||||||||||||
| 12 | B | D | A | A | D | C | B | E | |||||||||||||
| 13 | A | A | E | B | E | A | A | ||||||||||||||
| 14 | C | E | B | E | A | B | |||||||||||||||
| 15 | B | C | A | D | C | ||||||||||||||||
| 16 | C | B | E | A | |||||||||||||||||
| 17 | A | B | A | ||||||||||||||||||
| 18 | B | A | |||||||||||||||||||
| 19 | A | ||||||||||||||||||||
| 20 |
Addition
Need practiceMemory
| + | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 0 | |||||||||||||||||||||
| 1 | B | C | C | A | A | B | B | E | B | B | E | B | A | E | B | D | B | B | A | ||
| 2 | C | M | B | D | B | C | D | D | D | C | M | C | B | D | B | C | B | C | |||
| 3 | C | D | A | D | A | E | A | D | A | D | A | C | D | A | C | C | C | ||||
| 4 | B | B | B | E | E | B | B | B | E | A | A | B | E | B | D | A | |||||
| 5 | B | C | B | C | C | M | M | C | E | A | C | M | A | A | E | ||||||
| 6 | A | D | D | A | D | B | M | M | A | A | D | C | A | A | |||||||
| 7 | A | B | A | A | B | A | B | D | A | C | D | A | A | ||||||||
| 8 | C | M | C | D | M | M | M | D | C | B | C | C | |||||||||
| 9 | D | A | M | A | A | E | D | D | E | A | C | ||||||||||
| 10 | A | B | A | B | B | E | D | C | E | E | |||||||||||
| 11 | B | A | A | B | A | C | D | A | D | ||||||||||||
| 12 | B | D | A | A | D | C | B | E | |||||||||||||
| 13 | A | A | E | B | E | A | A | ||||||||||||||
| 14 | C | E | B | E | A | B | |||||||||||||||
| 15 | B | C | A | D | C | ||||||||||||||||
| 16 | C | B | E | A | |||||||||||||||||
| 17 | A | B | A | ||||||||||||||||||
| 18 | B | A | |||||||||||||||||||
| 19 | A | ||||||||||||||||||||
| 20 |
Subtraction
Need practiceMemory
| – | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 0 | |||||||||||||||||||||
| 1 | A | A | |||||||||||||||||||
| 2 | D | C | C | ||||||||||||||||||
| 3 | C | C | A | A | |||||||||||||||||
| 4 | A | B | B | A | B | ||||||||||||||||
| 5 | M | A | A | A | A | A | |||||||||||||||
| 6 | A | A | B | B | D | A | M | ||||||||||||||
| 7 | E | B | B | E | B | B | B | B | |||||||||||||
| 8 | C | D | D | C | M | B | E | C | D | ||||||||||||
| 9 | D | A | A | A | A | A | A | A | A | A | |||||||||||
| 10 | E | A | B | B | C | A | A | A | A | A | E | ||||||||||
| 11 | A | C | E | B | C | C | B | B | A | B | |||||||||||
| 12 | A | B | E | E | E | A | E | E | D | B | B | ||||||||||
| 13 | C | E | B | E | D | B | D | C | C | A | C | B | |||||||||
| 14 | B | A | C | A | A | C | C | A | A | B | B | B | B | ||||||||
| 15 | C | B | B | A | A | A | B | A | C | B | B | A | B | C | |||||||
| 16 | E | B | B | B | B | B | A | D | D | A | A | A | A | B | A | ||||||
| 17 | A | A | E | B | B | A | E | B | E | B | A | B | E | B | A | C | |||||
| 18 | B | A | B | A | C | B | B | A | C | A | E | C | C | B | B | A | C | ||||
| 19 | A | D | B | A | B | C | A | E | A | B | A | C | A | A | C | C | E | A | |||
| 20 | C | C | C | D | C | M | B | C | C | B | C | D | C | B | C | C | C | C | B |
Subtraction
Need practiceMemory
| – | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 0 | |||||||||||||||||||||
| 1 | A | A | |||||||||||||||||||
| 2 | D | C | C | ||||||||||||||||||
| 3 | C | C | A | A | |||||||||||||||||
| 4 | A | B | B | A | B | ||||||||||||||||
| 5 | M | A | A | A | A | A | |||||||||||||||
| 6 | A | A | B | B | D | A | M | ||||||||||||||
| 7 | E | B | B | E | B | B | B | B | |||||||||||||
| 8 | C | D | D | C | M | B | E | C | D | ||||||||||||
| 9 | D | A | A | A | A | A | A | A | A | A | |||||||||||
| 10 | E | A | B | B | C | A | A | A | A | A | E | ||||||||||
| 11 | A | C | E | B | C | C | B | B | A | B | |||||||||||
| 12 | A | B | E | E | E | A | E | E | D | B | B | ||||||||||
| 13 | C | E | B | E | D | B | D | C | C | A | C | B | |||||||||
| 14 | B | A | C | A | A | C | C | A | A | B | B | B | B | ||||||||
| 15 | C | B | B | A | A | A | B | A | C | B | B | A | B | C | |||||||
| 16 | E | B | B | B | B | B | A | D | D | A | A | A | A | B | A | ||||||
| 17 | A | A | E | B | B | A | E | B | E | B | A | B | E | B | A | C | |||||
| 18 | B | A | B | A | C | B | B | A | C | A | E | C | C | B | B | A | C | ||||
| 19 | A | D | B | A | B | C | A | E | A | B | A | C | A | A | C | C | E | A | |||
| 20 | C | C | C | D | C | M | B | C | C | B | C | D | C | B | C | C | C | C | B |
Need practiceMemory
| × | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1 | B | B | B | B | B | E | B | E | E | E | E | E |
| 2 | B | D | C | D | C | C | B | M | M | M | C | B |
| 3 | A | A | A | C | A | A | E | A | C | A | A | E |
| 4 | B | A | D | D | A | E | B | E | D | D | B | E |
| 5 | E | C | C | C | B | B | C | A | B | A | E | B |
| 6 | D | B | D | B | D | B | A | A | B | A | D | M |
| 7 | E | B | A | D | B | A | A | C | D | E | E | E |
| 8 | M | M | C | D | M | B | D | D | M | M | C | C |
| 9 | A | C | M | D | A | A | C | C | A | D | A | M |
| 10 | C | E | B | B | E | C | A | E | E | C | E | E |
| 11 | C | E | C | C | D | E | E | B | B | E | A | B |
| 12 | A | C | C | B | C | B | E | C | B | A | D | E |
Need practiceMemory
| ÷ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 | A | A | A | D | C | D | C | A | A | B |
| 2 | C | C | D | B | C | C | C | C | C | B |
| 3 | A | D | A | A | A | A | A | A | A | A |
| 4 | E | M | E | B | D | A | E | A | B | A |
| 5 | C | C | C | A | C | C | C | A | E | A |
| 6 | B | A | A | A | A | B | C | A | A | A |
| 7 | E | A | A | A | A | A | A | B | A | A |
| 8 | C | B | B | C | B | B | B | B | C | C |
| 9 | C | C | A | C | A | A | A | D | A | A |
| 10 | A | B | A | B | A | A | A | D | B | B |