No student devices needed. Know more
25 questions
3x9
27
18
9
90
4x8
32
8
16
24
6x7
42
36
49
35
7x8
56
49
64
40
8x9
72
81
64
54
9x4
36
16
81
45
3x3
9
3
12
15
4x3
12
4
3
9
6x3
18
9
12
6
3x7
21
14
6
28
4x4
16
8
12
18
6x4
24
12
8
20
4x7
28
16
49
11
6x6
36
12
30
35
8x6
48
64
36
14
6x9
54
42
15
36
7x7
49
42
56
14
7x9
63
49
64
56
9 × 5
44
14
45
40
10 × 90
90
900
9
100
2 × 20
22
40
80
10
Explore all questions with a free account