Targeted Year 4 resources for finding 1000 more or less than a 4-digit number, applying place value and mental calculation strategies, a core KS2 Maths objective. Activities build conceptual understanding of how only the thousands digit changes, promoting varied fluency and mental agility. This essential small step supports mastery of the number sequence and is vital for meeting national curriculum expectations. The CS Maths Scheme provides structured visual and pictorial practice.