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, ...
Volume is the amount of space occupied by a solid, liquid or a shape. The volume of cubes and cuboids can be measured in cubic centimetres (cm³) and metres (m³). The volume of a shape can also be ...