The array can be shown as 5 groups of 3 showing that 5 x 3 = 15. Or it could be shown as 3 groups of 5 showing that 3 x 5 = 15. This demonstrates that multiplication is commutative. Image caption, ...

Multiply by 6 using the grouping of objects, arrays, and facts you already know. Explore the Multiply by 6 facts using the grouping of objects and arrays. Compete against characters to see who finds ...