Addition, Subtraction, Multiplication and Division - Subtracting Whole Numbers with more than 4-digits - Worksheet

The lesson on subtracting whole numbers with more than four digits is tailored for students who have already gained experience with column subtraction in Year 4. This particular session, part of a series on Fluency & Precision, focuses on enhancing students' proficiency in using formal written methods for subtraction, with a special emphasis on the concept of exchange and maintaining correct place value. It is crucial for students to understand when an exchange is necessary and to recognise the role of '0' as a placeholder in such calculations. The lesson employs differentiated worksheets and teaching slides to cater to varying levels of ability, from those working towards expected standards to those capable of greater depth understanding.

During the lesson, students are presented with a series of subtraction problems that involve numbers with more than four digits. They are encouraged to represent these problems using bar models, which aids in visualising the process. For instance, they might calculate the new altitude of a plane after a descent or determine the difference in annual earnings between two individuals. The exercises range from straightforward subtractions without the need for exchanging to more complex problems that require multiple exchanges. Additionally, the lesson includes reasoning and problem-solving tasks, such as finding unknown numbers given their difference and identifying errors in subtraction calculations, further challenging the students to apply their knowledge critically.