Addition and subtraction - Add two-digit and one-digit numbers 2 - Presentation

In a mathematics lesson focused on addition, students are encouraged to utilise their knowledge of number bonds to aid in adding two-digit and one-digit numbers. The lesson begins with a discussion about number bonds that students already know, particularly those that sum to 10. This foundational understanding is crucial as the lesson progresses into more complex addition. Students are shown how to apply number bonds to larger numbers, recognising patterns that emerge when adding numbers to reach the next multiple of 10. Through a series of activities, they are guided to see how these patterns can simplify addition problems.

As the lesson continues, students are taught to partition numbers in order to make use of number bonds effectively. For example, when adding 6 and 5, they learn to break down the number 5 into 4 and 1 to create a bond with 6 that makes 10, and then add the remaining 1 to reach the sum of 11. A number line is used to visually support this strategy, helping students to understand the jumps made to reach the next multiple of 10 before adding the remainder. This method is further explored with different number combinations, reinforcing the concept of partitioning and the use of number bonds in addition. The lesson aims to build confidence in students' ability to perform addition by breaking down the process into more manageable steps using familiar number bonds.