3 groups of 3, 3 x 3, 3 + 3 + 3, 9, 3 groups of 5, 3 x 5, 5 + 5 + 5, 15, 2 groups of 5, 2 x 5, 5 + 5, 10, 2 groups of 4, 2 x 4, 4 + 4, 8

Multiplication arrays

Leaderboard

Visual style

Options

Switch template

Continue editing: ?