Multiplication | more ... |
 The basic idea of multiplication is repeated addition. For example: 5 × 3 = 5 + 5 + 5 = 15 But as well as multiplying by whole numbers, you can also multiply by fractions or decimals. For example 5 × 3½ = 5 + 5 + 5 + (half of 5) = 17.5 | |