Addition and Subtraction - Subtract four digit numbers (one exchange) - Worksheet

The worksheet is designed to help children master the concept of subtracting four-digit numbers with one exchange. It begins by encouraging the use of a place value chart and counters to visually represent the numbers involved in the subtraction problems. This tactile approach aids in understanding when and why an exchange is necessary. The children are then asked to practice calculations using the formal written method, continuing to use place value counters to reinforce their understanding of the exchange process.

Throughout the worksheet, children are presented with a series of subtraction problems involving two four-digit numbers where at least one exchange is required. They are encouraged to articulate their understanding by explaining why an exchange has taken place in each instance. The tasks are designed to develop fluency and precision in subtracting large numbers. For example, when subtracting 7 from 15 in the ones column, children learn to exchange one ten for ten ones, adjusting the tens column accordingly. This methodical approach helps children to grasp the concept of borrowing from a higher place value to perform the subtraction successfully.