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Tiếng ViệtBox A
Box B
Box C
Box D
Box E
Memori
10
5
6
9
5
10
0
0
0
0
0
0
2
2
3
6
2
9
0
0
0
0
0
0
12
2
9
9
7
7
7
8
6
9
11
8
June 2024
Sat, Jun 1
Sun, Jun 2
Mon, Jun 3
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Thu, Jun 6
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July
Mon, Jul 1
Tue, Jul 2
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Thu, Jul 4
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Sat, Jul 6
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August
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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
Sat, Feb 1
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March
Sat, Mar 1
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April
Tue, Apr 1
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Thu, Apr 3
Fri, Apr 4
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Sun, Apr 6
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Tue, Apr 8
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Thu, Apr 10
Fri, Apr 11
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Tue, Apr 15
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Fri, Apr 18
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Thu, Apr 24
Fri, Apr 25
Sat, Apr 26
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Wed, Apr 30
May
Thu, May 1
Fri, May 2
Sat, May 3
Sun, May 4
Mon, May 5
Tue, May 6
Wed, May 7
Thu, May 8
Fri, May 9
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Sun, May 25
Mon, May 26
Tue, May 27
Wed, May 28
Thu, May 29
Fri, May 30
Sat, May 31
Box A
Box B
Box C
Box D
Box E
Memori
5
4
2
3
12
3
7
15
13
8
13
9
0
0
0
0
0
0
13
7
11
11
11
12
0
0
0
0
0
0
5
4
10
6
10
10
Box A
Box B
Box C
Box D
Box E
Memori
27
20
25
31
31
11
21
11
21
19
29
8
14
28
22
27
33
21
8
12
18
21
28
4
3
5
12
10
18
6
11
20
27
32
42
13
Box A
Box B
Box C
Box D
Box E
Memori
1
3
6
5
4
6
14
14
16
15
25
16
2
4
8
7
8
8
8
8
4
7
12
5
Box A
Box B
Box C
Box D
Box E
Memori
10
10
8
10
11
12
12
8
9
13
6
13
10
5
7
16
9
12
12
16
23
8
26
15
16
13
16
14
16
15
13
14
15
20
23
15
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 | D | B | M | C | B | C | B | D | B | C | |||||||||||
| 1 | C | C | B | E | E | C | B | E | D | C | C | A | C | B | A | A | B | A | C | C | |
| 2 | M | D | D | D | B | A | E | E | E | A | C | C | D | C | B | D | D | C | A | ||
| 3 | A | A | A | A | C | B | D | B | M | E | E | A | A | A | E | A | A | A | |||
| 4 | B | A | B | A | A | B | B | A | A | D | D | A | B | A | A | A | B | ||||
| 5 | M | A | B | E | C | E | B | B | B | A | A | A | A | A | B | A | |||||
| 6 | M | A | B | D | A | B | A | A | D | D | A | B | C | C | B | ||||||
| 7 | B | C | C | E | B | C | C | B | D | A | C | B | C | D | |||||||
| 8 | M | M | E | C | D | D | E | D | C | E | A | C | M | ||||||||
| 9 | M | M | A | A | D | C | A | A | A | C | A | A | |||||||||
| 10 | E | B | B | A | C | A | B | A | C | D | A | ||||||||||
| 11 | E | B | C | A | A | B | B | B | A | ||||||||||||
| 12 | E | B | A | A | B | D | D | A | |||||||||||||
| 13 | B | C | C | B | C | B | C | ||||||||||||||
| 14 | E | B | C | D | A | B | |||||||||||||||
| 15 | C | D | A | C | A | ||||||||||||||||
| 16 | B | D | A | B | |||||||||||||||||
| 17 | B | D | C | ||||||||||||||||||
| 18 | C | D | |||||||||||||||||||
| 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 | D | B | M | C | B | C | B | D | B | C | |||||||||||
| 1 | C | C | B | E | E | C | B | E | D | C | C | A | C | B | A | A | B | A | C | C | |
| 2 | M | D | D | D | B | A | E | E | E | A | C | C | D | C | B | D | D | C | A | ||
| 3 | A | A | A | A | C | B | D | B | M | E | E | A | A | A | E | A | A | A | |||
| 4 | B | A | B | A | A | B | B | A | A | D | D | A | B | A | A | A | B | ||||
| 5 | M | A | B | E | C | E | B | B | B | A | A | A | A | A | B | A | |||||
| 6 | M | A | B | D | A | B | A | A | D | D | A | B | C | C | B | ||||||
| 7 | B | C | C | E | B | C | C | B | D | A | C | B | C | D | |||||||
| 8 | M | M | E | C | D | D | E | D | C | E | A | C | M | ||||||||
| 9 | M | M | A | A | D | C | A | A | A | C | A | A | |||||||||
| 10 | E | B | B | A | C | A | B | A | C | D | A | ||||||||||
| 11 | E | B | C | A | A | B | B | B | A | ||||||||||||
| 12 | E | B | A | A | B | D | D | A | |||||||||||||
| 13 | B | C | C | B | C | B | C | ||||||||||||||
| 14 | E | B | C | D | A | B | |||||||||||||||
| 15 | C | D | A | C | A | ||||||||||||||||
| 16 | B | D | A | B | |||||||||||||||||
| 17 | B | D | C | ||||||||||||||||||
| 18 | C | D | |||||||||||||||||||
| 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 | E | D | |||||||||||||||||||
| 2 | M | D | M | ||||||||||||||||||
| 3 | E | D | E | A | |||||||||||||||||
| 4 | B | B | A | A | A | ||||||||||||||||
| 5 | C | C | B | A | B | M | |||||||||||||||
| 6 | D | A | A | C | A | A | C | ||||||||||||||
| 7 | M | D | E | A | C | A | A | C | |||||||||||||
| 8 | M | D | B | D | M | B | E | B | A | ||||||||||||
| 9 | A | B | D | C | E | E | M | A | A | D | |||||||||||
| 10 | C | C | D | C | C | E | C | C | D | B | A | ||||||||||
| 11 | B | B | D | B | C | E | D | C | D | B | |||||||||||
| 12 | E | D | C | B | D | E | C | C | D | B | C | ||||||||||
| 13 | D | A | A | A | D | D | C | C | E | C | E | C | |||||||||
| 14 | B | A | D | C | A | B | B | C | B | C | C | D | E | ||||||||
| 15 | A | B | B | B | B | A | D | A | E | C | C | B | A | E | |||||||
| 16 | A | D | C | C | B | D | A | D | D | B | B | A | B | C | A | ||||||
| 17 | C | C | E | B | E | D | C | D | E | A | C | D | A | D | A | C | |||||
| 18 | D | B | B | B | D | C | B | D | C | C | B | C | C | D | A | C | D | ||||
| 19 | E | C | A | B | B | D | A | C | D | C | C | C | C | C | A | C | C | B | |||
| 20 | C | B | M | D | C | B | D | E | D | D | B | E | B | E | E | C | C | E | C |
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 | E | D | |||||||||||||||||||
| 2 | M | D | M | ||||||||||||||||||
| 3 | E | D | E | A | |||||||||||||||||
| 4 | B | B | A | A | A | ||||||||||||||||
| 5 | C | C | B | A | B | M | |||||||||||||||
| 6 | D | A | A | C | A | A | C | ||||||||||||||
| 7 | M | D | E | A | C | A | A | C | |||||||||||||
| 8 | M | D | B | D | M | B | E | B | A | ||||||||||||
| 9 | A | B | D | C | E | E | M | A | A | D | |||||||||||
| 10 | C | C | D | C | C | E | C | C | D | B | A | ||||||||||
| 11 | B | B | D | B | C | E | D | C | D | B | |||||||||||
| 12 | E | D | C | B | D | E | C | C | D | B | C | ||||||||||
| 13 | D | A | A | A | D | D | C | C | E | C | E | C | |||||||||
| 14 | B | A | D | C | A | B | B | C | B | C | C | D | E | ||||||||
| 15 | A | B | B | B | B | A | D | A | E | C | C | B | A | E | |||||||
| 16 | A | D | C | C | B | D | A | D | D | B | B | A | B | C | A | ||||||
| 17 | C | C | E | B | E | D | C | D | E | A | C | D | A | D | A | C | |||||
| 18 | D | B | B | B | D | C | B | D | C | C | B | C | C | D | A | C | D | ||||
| 19 | E | C | A | B | B | D | A | C | D | C | C | C | C | C | A | C | C | B | |||
| 20 | C | B | M | D | C | B | D | E | D | D | B | E | B | E | E | C | C | E | C |
Need practiceMemory
| × | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1 | E | D | C | D | C | E | C | D | A | E | A | D |
| 2 | B | D | C | C | B | D | M | M | M | M | D | E |
| 3 | E | D | A | E | A | D | D | D | B | E | A | E |
| 4 | A | A | B | B | D | A | A | A | B | B | A | B |
| 5 | B | C | B | C | B | A | A | B | C | D | A | A |
| 6 | D | B | B | D | C | C | C | B | B | D | B | M |
| 7 | E | B | E | B | C | E | B | A | E | C | B | E |
| 8 | C | E | E | E | M | C | M | A | C | E | M | E |
| 9 | E | D | M | D | A | E | M | D | A | E | M | A |
| 10 | E | E | E | E | D | A | A | D | C | C | B | E |
| 11 | E | B | D | B | B | C | B | C | C | D | E | E |
| 12 | E | A | D | E | C | D | M | A | E | E | D | M |
Need practiceMemory
| ÷ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 | C | D | A | D | C | B | D | C | B | A |
| 2 | A | E | D | A | C | B | B | E | D | B |
| 3 | A | A | C | A | A | A | A | A | C | A |
| 4 | B | B | A | E | B | B | A | A | B | A |
| 5 | B | A | A | A | A | A | A | A | B | B |
| 6 | C | B | B | A | D | A | A | A | B | A |
| 7 | B | B | A | A | A | A | B | A | B | B |
| 8 | B | C | C | C | C | A | C | B | B | D |
| 9 | A | A | A | A | A | A | A | A | A | A |
| 10 | C | B | C | A | A | B | B | A | C | B |