Addition and subtraction - Subtract a three-digit number from a three-digit number no exchange - Starter

In a Year 3 mathematics lesson, pupils are introduced to the concept of subtracting a three-digit number from another three-digit number without the need for exchanging. The lesson starts with a 'Fluent in Four' revision exercise, aiming to consolidate the students' understanding of basic addition and subtraction. They are presented with a calculation task where they must add together forty-three, eleven ones, and four tens, which equates to the sum of 38 and 45. Through this activity, they practice combining numbers to reach a total, enhancing their fluency in addition.

Further exercises include understanding the representation of numbers through diagrams, identifying the greatest and smallest numbers from a given set, and completing number sentences to compare numerical values. Pupils are also asked to solve an addition problem by adding the numbers 249 and 574, fostering their ability to work with larger numbers. Additionally, the lesson includes a practical element where students are challenged to determine which 3D shape corresponds to a given net. This multifaceted approach to the lesson not only improves the children's arithmetic skills but also encourages their spatial awareness and understanding of geometric shapes, such as identifying a cuboid from its net representation.