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Tiếng ViệtBox A
Box B
Box C
Box D
Box E
Пам’ять
9
7
6
8
9
6
16
21
17
16
19
15
0
0
0
0
0
0
7
3
6
5
7
7
13
9
2
9
8
5
7
6
11
6
11
8
May 2024
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Box A
Box B
Box C
Box D
Box E
Пам’ять
5
2
3
4
6
9
0
0
0
0
0
0
13
6
6
4
7
9
10
14
14
11
10
6
12
8
9
7
10
9
6
10
10
7
8
4
Box A
Box B
Box C
Box D
Box E
Пам’ять
23
27
29
22
31
13
20
18
21
14
32
4
0
0
0
0
0
0
14
21
16
8
32
0
3
16
8
8
11
8
19
35
29
11
46
5
Box A
Box B
Box C
Box D
Box E
Пам’ять
3
1
6
4
4
7
14
18
21
15
20
12
8
5
4
7
7
6
5
10
10
5
13
1
Box A
Box B
Box C
Box D
Box E
Пам’ять
7
9
11
12
10
12
10
7
12
14
8
10
11
6
11
13
14
4
17
14
12
19
22
16
0
0
0
0
0
0
21
19
19
17
13
11
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 | E | B | B | B | A | E | A | B | B | B | B | E | A | A | B | B | C | A | C | ||
| 2 | M | M | C | M | C | M | E | D | B | C | C | M | B | C | D | B | B | B | |||
| 3 | D | A | A | A | C | A | A | A | D | E | A | A | A | A | C | D | D | ||||
| 4 | M | D | B | M | D | M | B | E | B | B | A | B | B | A | A | D | |||||
| 5 | C | A | A | A | B | M | M | C | E | A | M | C | C | A | C | ||||||
| 6 | C | A | M | A | D | A | B | D | C | A | D | A | A | B | |||||||
| 7 | B | A | A | A | A | E | C | C | B | A | D | B | B | ||||||||
| 8 | E | M | C | D | M | B | C | C | C | C | M | C | |||||||||
| 9 | D | E | D | D | D | M | E | A | C | C | A | ||||||||||
| 10 | C | B | E | A | E | B | A | B | B | C | |||||||||||
| 11 | A | B | B | C | E | A | D | A | C | ||||||||||||
| 12 | E | E | A | B | C | B | B | A | |||||||||||||
| 13 | A | A | E | A | B | B | C | ||||||||||||||
| 14 | A | B | E | A | B | B | |||||||||||||||
| 15 | B | C | E | A | E | ||||||||||||||||
| 16 | C | B | C | E | |||||||||||||||||
| 17 | A | A | A | ||||||||||||||||||
| 18 | B | A | |||||||||||||||||||
| 19 | D | ||||||||||||||||||||
| 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 | E | B | B | B | A | E | A | B | B | B | B | E | A | A | B | B | C | A | C | ||
| 2 | M | M | C | M | C | M | E | D | B | C | C | M | B | C | D | B | B | B | |||
| 3 | D | A | A | A | C | A | A | A | D | E | A | A | A | A | C | D | D | ||||
| 4 | M | D | B | M | D | M | B | E | B | B | A | B | B | A | A | D | |||||
| 5 | C | A | A | A | B | M | M | C | E | A | M | C | C | A | C | ||||||
| 6 | C | A | M | A | D | A | B | D | C | A | D | A | A | B | |||||||
| 7 | B | A | A | A | A | E | C | C | B | A | D | B | B | ||||||||
| 8 | E | M | C | D | M | B | C | C | C | C | M | C | |||||||||
| 9 | D | E | D | D | D | M | E | A | C | C | A | ||||||||||
| 10 | C | B | E | A | E | B | A | B | B | C | |||||||||||
| 11 | A | B | B | C | E | A | D | A | C | ||||||||||||
| 12 | E | E | A | B | C | B | B | A | |||||||||||||
| 13 | A | A | E | A | B | B | C | ||||||||||||||
| 14 | A | B | E | A | B | B | |||||||||||||||
| 15 | B | C | E | A | E | ||||||||||||||||
| 16 | C | B | C | E | |||||||||||||||||
| 17 | A | A | A | ||||||||||||||||||
| 18 | B | A | |||||||||||||||||||
| 19 | D | ||||||||||||||||||||
| 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 | E | |||||||||||||||||||
| 2 | M | C | M | ||||||||||||||||||
| 3 | D | C | A | A | |||||||||||||||||
| 4 | D | B | E | B | D | ||||||||||||||||
| 5 | C | A | A | B | B | C | |||||||||||||||
| 6 | A | A | B | A | A | B | D | ||||||||||||||
| 7 | E | C | C | C | A | C | B | B | |||||||||||||
| 8 | B | B | C | B | C | B | D | B | D | ||||||||||||
| 9 | E | A | C | D | A | A | A | M | A | A | |||||||||||
| 10 | B | A | A | B | A | B | C | B | A | A | A | ||||||||||
| 11 | B | B | B | E | B | B | A | A | B | C | |||||||||||
| 12 | C | B | A | E | B | B | A | B | A | B | A | ||||||||||
| 13 | D | A | C | C | C | B | B | D | C | B | A | D | |||||||||
| 14 | A | B | E | C | C | A | C | B | C | A | B | B | B | ||||||||
| 15 | C | B | E | B | A | E | A | B | C | A | B | D | B | A | |||||||
| 16 | C | A | A | E | A | B | B | E | C | D | D | C | A | B | B | ||||||
| 17 | A | B | B | E | E | B | D | C | A | A | A | C | B | E | D | A | |||||
| 18 | B | E | B | B | A | A | A | C | B | A | B | A | B | B | B | B | C | ||||
| 19 | C | B | B | B | A | A | C | B | B | C | B | D | B | D | A | C | A | E | |||
| 20 | M | D | B | B | B | B | M | C | B | C | B | C | C | C | E | B | B | B | M |
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 | E | |||||||||||||||||||
| 2 | M | C | M | ||||||||||||||||||
| 3 | D | C | A | A | |||||||||||||||||
| 4 | D | B | E | B | D | ||||||||||||||||
| 5 | C | A | A | B | B | C | |||||||||||||||
| 6 | A | A | B | A | A | B | D | ||||||||||||||
| 7 | E | C | C | C | A | C | B | B | |||||||||||||
| 8 | B | B | C | B | C | B | D | B | D | ||||||||||||
| 9 | E | A | C | D | A | A | A | M | A | A | |||||||||||
| 10 | B | A | A | B | A | B | C | B | A | A | A | ||||||||||
| 11 | B | B | B | E | B | B | A | A | B | C | |||||||||||
| 12 | C | B | A | E | B | B | A | B | A | B | A | ||||||||||
| 13 | D | A | C | C | C | B | B | D | C | B | A | D | |||||||||
| 14 | A | B | E | C | C | A | C | B | C | A | B | B | B | ||||||||
| 15 | C | B | E | B | A | E | A | B | C | A | B | D | B | A | |||||||
| 16 | C | A | A | E | A | B | B | E | C | D | D | C | A | B | B | ||||||
| 17 | A | B | B | E | E | B | D | C | A | A | A | C | B | E | D | A | |||||
| 18 | B | E | B | B | A | A | A | C | B | A | B | A | B | B | B | B | C | ||||
| 19 | C | B | B | B | A | A | C | B | B | C | B | D | B | D | A | C | A | E | |||
| 20 | M | D | B | B | B | B | M | C | B | C | B | C | C | C | E | B | B | B | M |
Need practiceMemory
| × | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1 | E | A | B | B | B | E | C | E | E | B | C | C |
| 2 | D | B | B | B | M | C | M | M | C | B | B | B |
| 3 | A | A | A | A | A | A | A | C | E | E | A | D |
| 4 | D | E | B | D | D | D | B | A | M | B | E | B |
| 5 | A | C | C | A | C | C | A | C | E | A | C | C |
| 6 | A | C | M | C | C | B | C | A | D | A | C | B |
| 7 | E | C | E | A | D | E | A | E | B | E | E | D |
| 8 | B | B | C | M | M | M | D | D | C | B | M | C |
| 9 | E | M | A | D | E | D | A | D | A | C | E | D |
| 10 | E | D | C | B | C | B | E | D | A | B | C | B |
| 11 | E | C | A | E | E | B | C | A | A | E | C | E |
| 12 | E | E | B | E | B | B | E | E | D | B | D | A |
Need practiceMemory
| ÷ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 | A | B | B | B | B | A | E | A | A | A |
| 2 | D | D | C | C | D | M | B | D | C | C |
| 3 | D | D | A | A | A | C | A | C | A | A |
| 4 | B | A | A | A | B | B | A | B | B | B |
| 5 | B | C | A | A | B | C | C | A | A | A |
| 6 | A | A | C | B | A | A | A | C | A | A |
| 7 | A | B | A | A | A | A | A | B | A | B |
| 8 | B | B | B | C | B | C | B | C | B | B |
| 9 | A | A | A | A | A | C | C | A | A | A |
| 10 | A | A | B | C | B | A | C | B | A | A |