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Tiếng ViệtBox A
Box B
Box C
Box D
Box E
Пам’ять
8
7
8
5
10
7
14
21
14
20
20
15
5
6
1
5
2
5
5
3
4
8
7
8
0
0
0
0
0
0
7
9
3
9
8
13
June 2024
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April
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Box A
Box B
Box C
Box D
Box E
Пам’ять
8
3
3
5
4
6
9
9
12
11
13
11
0
0
0
0
0
0
11
10
10
11
13
10
0
0
0
0
0
0
8
7
6
5
10
9
Box A
Box B
Box C
Box D
Box E
Пам’ять
25
26
18
25
27
24
17
22
12
11
30
17
26
24
16
25
36
18
14
14
8
16
31
8
6
8
6
9
16
9
24
24
14
24
41
18
Box A
Box B
Box C
Box D
Box E
Пам’ять
6
2
4
4
4
5
15
13
13
15
23
21
7
8
4
5
6
7
6
6
5
11
12
4
Box A
Box B
Box C
Box D
Box E
Пам’ять
0
0
0
0
0
0
11
11
8
12
7
12
9
8
6
12
13
11
15
12
22
14
20
17
13
15
13
15
19
15
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 | D | M | D | D | A | D | C | D | C | |||||||||||
| 1 | D | B | A | A | D | E | E | B | C | B | E | B | A | D | C | B | B | A | A | D | |
| 2 | E | A | C | A | B | C | C | E | M | B | A | A | B | B | B | A | A | A | D | ||
| 3 | B | B | B | A | A | A | C | A | A | A | A | A | C | A | A | C | A | A | |||
| 4 | D | B | B | A | E | A | A | B | C | B | B | C | A | A | A | B | B | ||||
| 5 | E | C | E | A | C | D | E | A | B | B | C | C | A | E | A | B | |||||
| 6 | E | A | E | C | B | A | D | B | E | C | E | A | C | A | A | ||||||
| 7 | M | E | D | C | D | B | A | B | E | B | E | D | B | A | |||||||
| 8 | M | M | M | C | E | M | C | B | M | B | D | C | B | ||||||||
| 9 | A | C | A | A | A | D | E | D | A | A | A | A | |||||||||
| 10 | E | B | A | D | A | B | M | A | A | D | A | ||||||||||
| 11 | B | A | A | C | D | A | C | D | E | ||||||||||||
| 12 | B | A | A | B | B | A | D | D | |||||||||||||
| 13 | B | A | C | A | A | E | D | ||||||||||||||
| 14 | B | B | E | B | B | A | |||||||||||||||
| 15 | A | A | A | A | A | ||||||||||||||||
| 16 | A | A | A | B | |||||||||||||||||
| 17 | E | B | D | ||||||||||||||||||
| 18 | A | A | |||||||||||||||||||
| 19 | B | ||||||||||||||||||||
| 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 | D | M | D | D | A | D | C | D | C | |||||||||||
| 1 | D | B | A | A | D | E | E | B | C | B | E | B | A | D | C | B | B | A | A | D | |
| 2 | E | A | C | A | B | C | C | E | M | B | A | A | B | B | B | A | A | A | D | ||
| 3 | B | B | B | A | A | A | C | A | A | A | A | A | C | A | A | C | A | A | |||
| 4 | D | B | B | A | E | A | A | B | C | B | B | C | A | A | A | B | B | ||||
| 5 | E | C | E | A | C | D | E | A | B | B | C | C | A | E | A | B | |||||
| 6 | E | A | E | C | B | A | D | B | E | C | E | A | C | A | A | ||||||
| 7 | M | E | D | C | D | B | A | B | E | B | E | D | B | A | |||||||
| 8 | M | M | M | C | E | M | C | B | M | B | D | C | B | ||||||||
| 9 | A | C | A | A | A | D | E | D | A | A | A | A | |||||||||
| 10 | E | B | A | D | A | B | M | A | A | D | A | ||||||||||
| 11 | B | A | A | C | D | A | C | D | E | ||||||||||||
| 12 | B | A | A | B | B | A | D | D | |||||||||||||
| 13 | B | A | C | A | A | E | D | ||||||||||||||
| 14 | B | B | E | B | B | A | |||||||||||||||
| 15 | A | A | A | A | A | ||||||||||||||||
| 16 | A | A | A | B | |||||||||||||||||
| 17 | E | B | D | ||||||||||||||||||
| 18 | A | A | |||||||||||||||||||
| 19 | B | ||||||||||||||||||||
| 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 | D | E | |||||||||||||||||||
| 2 | M | C | C | ||||||||||||||||||
| 3 | B | A | E | D | |||||||||||||||||
| 4 | E | A | A | A | A | ||||||||||||||||
| 5 | C | B | D | E | C | E | |||||||||||||||
| 6 | D | C | D | A | A | C | B | ||||||||||||||
| 7 | D | D | A | A | E | B | C | C | |||||||||||||
| 8 | M | B | C | D | E | B | D | E | C | ||||||||||||
| 9 | M | M | A | A | C | C | A | A | A | C | |||||||||||
| 10 | A | A | E | B | B | A | E | B | M | D | B | ||||||||||
| 11 | E | A | D | C | B | D | B | B | D | A | |||||||||||
| 12 | B | C | A | A | B | E | D | A | B | B | E | ||||||||||
| 13 | D | D | A | A | B | A | B | A | E | D | D | A | |||||||||
| 14 | D | E | B | A | E | E | A | D | C | C | A | B | D | ||||||||
| 15 | C | A | E | A | E | D | B | A | B | E | D | C | B | E | |||||||
| 16 | B | B | A | A | B | E | C | M | D | A | B | A | B | E | D | ||||||
| 17 | A | D | D | A | A | D | E | D | B | B | C | A | A | B | A | A | |||||
| 18 | D | B | A | D | A | C | B | E | C | B | B | A | A | B | D | D | E | ||||
| 19 | A | C | C | E | B | A | E | B | B | A | E | M | A | B | A | E | C | D | |||
| 20 | B | C | C | M | B | D | A | C | C | C | A | C | A | B | D | B | A | E | D |
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 | D | E | |||||||||||||||||||
| 2 | M | C | C | ||||||||||||||||||
| 3 | B | A | E | D | |||||||||||||||||
| 4 | E | A | A | A | A | ||||||||||||||||
| 5 | C | B | D | E | C | E | |||||||||||||||
| 6 | D | C | D | A | A | C | B | ||||||||||||||
| 7 | D | D | A | A | E | B | C | C | |||||||||||||
| 8 | M | B | C | D | E | B | D | E | C | ||||||||||||
| 9 | M | M | A | A | C | C | A | A | A | C | |||||||||||
| 10 | A | A | E | B | B | A | E | B | M | D | B | ||||||||||
| 11 | E | A | D | C | B | D | B | B | D | A | |||||||||||
| 12 | B | C | A | A | B | E | D | A | B | B | E | ||||||||||
| 13 | D | D | A | A | B | A | B | A | E | D | D | A | |||||||||
| 14 | D | E | B | A | E | E | A | D | C | C | A | B | D | ||||||||
| 15 | C | A | E | A | E | D | B | A | B | E | D | C | B | E | |||||||
| 16 | B | B | A | A | B | E | C | M | D | A | B | A | B | E | D | ||||||
| 17 | A | D | D | A | A | D | E | D | B | B | C | A | A | B | A | A | |||||
| 18 | D | B | A | D | A | C | B | E | C | B | B | A | A | B | D | D | E | ||||
| 19 | A | C | C | E | B | A | E | B | B | A | E | M | A | B | A | E | C | D | |||
| 20 | B | C | C | M | B | D | A | C | C | C | A | C | A | B | D | B | A | E | D |
Need practiceMemory
| × | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1 | A | M | D | B | B | E | B | D | B | E | E | E |
| 2 | A | B | B | D | M | M | A | M | E | M | E | D |
| 3 | D | M | A | A | B | C | A | D | A | A | D | C |
| 4 | A | A | D | B | B | A | A | A | B | C | D | A |
| 5 | C | E | A | C | C | C | C | C | B | B | C | C |
| 6 | M | A | A | M | A | C | B | M | A | A | D | D |
| 7 | M | E | A | A | M | C | D | B | B | C | E | E |
| 8 | M | M | M | M | E | C | E | B | E | E | D | A |
| 9 | M | A | A | E | E | D | A | M | D | B | M | C |
| 10 | E | E | B | A | D | E | E | M | D | D | B | E |
| 11 | M | A | A | C | B | M | A | E | D | E | B | A |
| 12 | D | E | E | D | E | D | E | B | M | B | D | B |
Need practiceMemory
| ÷ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 | M | B | A | C | A | C | D | B | E | E |
| 2 | C | M | M | B | B | B | B | A | C | C |
| 3 | A | C | C | C | A | B | A | A | A | A |
| 4 | A | A | D | A | A | D | B | B | A | D |
| 5 | C | C | A | B | C | B | D | A | B | C |
| 6 | A | A | A | C | A | B | D | D | B | A |
| 7 | D | A | A | B | C | E | C | A | B | A |
| 8 | C | B | B | A | B | A | C | B | B | B |
| 9 | C | A | B | A | A | A | A | A | B | A |
| 10 | C | B | C | A | D | A | E | B | B | D |