No student devices needed. Know more
10 questions
5 x 3
15
20
25
30
5 x 5
15
25
35
45
2 x 4
2
4
6
8
3 x 2
3
6
9
12
6 x 5
20
25
30
35
2 x 10
20
30
40
50
5 x 8
20
30
35
40
2 x 9
16
17
18
19
7 x 2
13
14
15
16
1 x 5
5
1
0
10
Explore all questions with a free account