Practical Year 4 resources for multiplying 2-digits by 1-digit using the expanded method, linking partitioning to formal calculation, a core KS2 Maths objective. Activities build conceptual understanding of the distributive law by multiplying the tens and the ones separately before summing. This essential small step supports mastery of multiplication methods and is vital for meeting national curriculum expectations. The CS Maths Scheme provides structured partitioning and calculation practice.