Dedicated Year 2 resources for adding and subtracting multiples of 10 to and from two-digit numbers, a core KS1 Maths objective for place value mental calculation. Activities build conceptual understanding of how only the tens digit changes and promote varied fluency in mental agility. This essential small step supports mastery of column place value and is vital for national curriculum expectations. The CS Maths Scheme provides structured Base 10 and hundred square practice.