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Tiếng ViệtBox A
Box B
Box C
Box D
Box E
Mémoire
8
7
8
5
10
7
15
11
17
17
22
22
3
3
7
3
4
4
8
5
6
4
4
8
0
0
0
0
0
0
7
5
6
10
13
8
May 2024
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June
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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
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April
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Box A
Box B
Box C
Box D
Box E
Mémoire
4
2
5
8
4
6
11
13
9
10
10
12
0
0
0
0
0
0
9
8
8
17
13
10
0
0
0
0
0
0
5
6
6
13
7
8
Box A
Box B
Box C
Box D
Box E
Mémoire
22
28
27
23
29
16
17
22
18
14
24
14
20
24
20
22
36
23
14
15
7
16
30
9
7
8
7
7
18
7
24
21
16
25
45
14
Box A
Box B
Box C
Box D
Box E
Mémoire
4
3
7
6
3
2
17
17
11
13
19
23
6
4
5
8
6
8
13
5
3
8
11
4
Box A
Box B
Box C
Box D
Box E
Mémoire
0
0
0
0
0
0
10
12
8
9
14
8
9
6
11
10
10
13
15
15
13
21
21
15
12
12
14
21
15
16
0
0
0
0
0
0
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 | C | A | M | B | D | D | A | A | M | C | |||||||||||
| 1 | M | B | D | E | D | D | B | B | C | E | A | C | A | B | B | B | B | D | C | B | |
| 2 | M | B | M | C | C | M | D | E | A | B | A | A | B | B | B | C | A | B | E | ||
| 3 | M | A | D | A | B | C | B | A | A | A | A | B | C | C | B | A | A | C | |||
| 4 | B | A | C | A | B | A | B | B | B | A | B | B | B | D | A | B | A | ||||
| 5 | C | A | A | D | B | A | B | C | C | C | B | C | A | C | B | B | |||||
| 6 | D | M | D | D | D | B | D | C | D | A | B | A | C | A | A | ||||||
| 7 | B | E | B | E | C | E | C | E | A | D | E | B | A | M | |||||||
| 8 | M | B | E | E | C | B | B | D | M | A | C | A | C | ||||||||
| 9 | C | D | C | A | C | A | C | M | A | A | C | C | |||||||||
| 10 | B | A | D | E | C | A | C | B | C | A | B | ||||||||||
| 11 | A | A | D | A | D | C | C | B | A | ||||||||||||
| 12 | D | B | B | A | A | A | A | B | |||||||||||||
| 13 | E | B | A | A | A | B | B | ||||||||||||||
| 14 | B | C | D | A | A | D | |||||||||||||||
| 15 | A | D | C | D | A | ||||||||||||||||
| 16 | A | C | A | A | |||||||||||||||||
| 17 | A | A | A | ||||||||||||||||||
| 18 | B | B | |||||||||||||||||||
| 19 | C | ||||||||||||||||||||
| 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 | C | A | M | B | D | D | A | A | M | C | |||||||||||
| 1 | M | B | D | E | D | D | B | B | C | E | A | C | A | B | B | B | B | D | C | B | |
| 2 | M | B | M | C | C | M | D | E | A | B | A | A | B | B | B | C | A | B | E | ||
| 3 | M | A | D | A | B | C | B | A | A | A | A | B | C | C | B | A | A | C | |||
| 4 | B | A | C | A | B | A | B | B | B | A | B | B | B | D | A | B | A | ||||
| 5 | C | A | A | D | B | A | B | C | C | C | B | C | A | C | B | B | |||||
| 6 | D | M | D | D | D | B | D | C | D | A | B | A | C | A | A | ||||||
| 7 | B | E | B | E | C | E | C | E | A | D | E | B | A | M | |||||||
| 8 | M | B | E | E | C | B | B | D | M | A | C | A | C | ||||||||
| 9 | C | D | C | A | C | A | C | M | A | A | C | C | |||||||||
| 10 | B | A | D | E | C | A | C | B | C | A | B | ||||||||||
| 11 | A | A | D | A | D | C | C | B | A | ||||||||||||
| 12 | D | B | B | A | A | A | A | B | |||||||||||||
| 13 | E | B | A | A | A | B | B | ||||||||||||||
| 14 | B | C | D | A | A | D | |||||||||||||||
| 15 | A | D | C | D | A | ||||||||||||||||
| 16 | A | C | A | A | |||||||||||||||||
| 17 | A | A | A | ||||||||||||||||||
| 18 | B | B | |||||||||||||||||||
| 19 | C | ||||||||||||||||||||
| 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 | M | E | |||||||||||||||||||
| 2 | B | D | M | ||||||||||||||||||
| 3 | M | A | A | B | |||||||||||||||||
| 4 | C | C | B | A | M | ||||||||||||||||
| 5 | E | C | B | B | C | C | |||||||||||||||
| 6 | D | C | C | C | E | A | D | ||||||||||||||
| 7 | B | D | A | A | D | E | D | E | |||||||||||||
| 8 | M | D | B | D | M | C | D | C | A | ||||||||||||
| 9 | C | D | A | D | D | A | D | A | D | A | |||||||||||
| 10 | A | B | B | E | D | B | D | A | A | D | D | ||||||||||
| 11 | A | E | C | D | E | E | A | B | A | B | |||||||||||
| 12 | D | D | A | B | A | E | B | A | D | B | D | ||||||||||
| 13 | D | D | C | D | E | B | D | B | A | D | A | A | |||||||||
| 14 | E | A | E | B | B | D | E | A | B | E | D | C | A | ||||||||
| 15 | E | A | E | D | E | A | B | C | E | A | B | B | A | A | |||||||
| 16 | A | D | A | A | D | D | A | C | D | B | A | E | B | A | D | ||||||
| 17 | A | B | E | B | E | D | C | D | E | A | B | D | A | E | B | A | |||||
| 18 | E | D | C | B | B | A | C | A | C | B | C | D | E | A | D | D | C | ||||
| 19 | B | A | C | D | A | E | A | A | E | C | B | B | D | M | A | D | A | A | |||
| 20 | B | B | C | D | B | C | A | A | B | B | E | C | A | A | A | B | 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 | M | E | |||||||||||||||||||
| 2 | B | D | M | ||||||||||||||||||
| 3 | M | A | A | B | |||||||||||||||||
| 4 | C | C | B | A | M | ||||||||||||||||
| 5 | E | C | B | B | C | C | |||||||||||||||
| 6 | D | C | C | C | E | A | D | ||||||||||||||
| 7 | B | D | A | A | D | E | D | E | |||||||||||||
| 8 | M | D | B | D | M | C | D | C | A | ||||||||||||
| 9 | C | D | A | D | D | A | D | A | D | A | |||||||||||
| 10 | A | B | B | E | D | B | D | A | A | D | D | ||||||||||
| 11 | A | E | C | D | E | E | A | B | A | B | |||||||||||
| 12 | D | D | A | B | A | E | B | A | D | B | D | ||||||||||
| 13 | D | D | C | D | E | B | D | B | A | D | A | A | |||||||||
| 14 | E | A | E | B | B | D | E | A | B | E | D | C | A | ||||||||
| 15 | E | A | E | D | E | A | B | C | E | A | B | B | A | A | |||||||
| 16 | A | D | A | A | D | D | A | C | D | B | A | E | B | A | D | ||||||
| 17 | A | B | E | B | E | D | C | D | E | A | B | D | A | E | B | A | |||||
| 18 | E | D | C | B | B | A | C | A | C | B | C | D | E | A | D | D | C | ||||
| 19 | B | A | C | D | A | E | A | A | E | C | B | B | D | M | A | D | A | A | |||
| 20 | B | B | C | D | B | C | A | A | B | B | E | C | A | A | A | B | C | E | C |
Need practiceMemory
| × | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1 | E | D | C | B | E | D | D | D | A | D | A | D |
| 2 | B | B | B | C | M | B | M | M | A | M | A | C |
| 3 | A | C | D | A | A | A | B | E | A | M | D | A |
| 4 | B | A | B | B | A | B | B | C | A | B | B | A |
| 5 | M | C | A | A | A | C | E | C | B | B | A | A |
| 6 | C | D | M | C | M | E | A | D | D | D | D | E |
| 7 | D | E | D | M | E | E | A | A | A | D | E | D |
| 8 | B | B | C | E | A | E | D | A | A | A | C | M |
| 9 | A | A | D | M | E | A | M | C | D | C | A | M |
| 10 | D | B | B | E | B | E | M | E | E | A | A | A |
| 11 | E | E | A | A | D | E | B | E | E | E | E | D |
| 12 | M | E | C | B | E | A | B | B | A | D | D | M |
Need practiceMemory
| ÷ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 | B | D | B | E | C | A | D | A | A | B |
| 2 | B | C | E | D | A | B | B | B | B | C |
| 3 | B | A | C | E | B | D | A | A | A | A |
| 4 | A | A | B | B | A | D | B | B | A | A |
| 5 | B | B | D | C | A | C | B | C | A | C |
| 6 | C | B | C | C | A | B | A | A | D | A |
| 7 | E | B | A | C | C | B | B | A | A | A |
| 8 | A | M | B | B | A | A | E | C | B | B |
| 9 | A | A | A | A | C | A | A | B | A | B |
| 10 | A | D | D | B | E | A | D | A | C | B |