Four in Four - Subtraction Set J - numbers with 3dp - 1dp with exchanges

The "Four in Four" activity is a fast-paced mathematical challenge designed for Year 6 students to sharpen their subtraction skills. The task requires pupils to complete four written subtraction calculations involving numbers with three decimal places (3dp) subtracted by numbers with one decimal place (1dp), where exchanges are necessary. The goal is to complete all four calculations within a tight time frame of four minutes, testing both their numerical proficiency and time management skills. The activity is structured into various sets, each containing a series of worksheets that progressively increase in complexity and difficulty.

Each worksheet presents a set of subtraction problems that students must solve, providing an excellent opportunity for practice in handling decimal numbers and understanding the concept of borrowing or exchanging across place values. For example, calculations such as "68.423 - 29.6" and "81.7 - 44.261" require careful alignment of decimal points and proper handling of the different place values. The activity not only reinforces arithmetic skills but also encourages mental agility and precision. The provided answer keys allow for immediate feedback, enabling students to check their work and understand any errors, thereby facilitating learning and improvement in their subtraction capabilities.