In Maths I have been learning Doubling and halving To solve multiplication problems Using this strategy You must take any multiplication question that your stuck on. For example 16X3, So I half 16 and double 3 so that would be 8X6 and the answer to 8X6 is 48 so that must be the answer to 16X3. WALT I am learning to make multiplication Problems easier by using Doubling and halving.