Multiplication and Division (2) - Formal multiplication 2-digits by 2-digits - Presentation

The lesson on multiplying two-digit numbers by two-digit numbers is an advanced step in understanding multiplication and division. Students are encouraged to build on their knowledge of the Area Model and apply long multiplication to execute these calculations. The lesson begins with a discussion on how multiplying by a two-digit number differs from simpler multiplication tasks. Pupils are then presented with a series of activities, where they are tasked to complete calculations such as 26 times 13, 35 times 21, 56 times 27, and 73 times 31 using the long multiplication method. This method involves breaking down the numbers into tens and ones, multiplying each separately, and then combining the results to get the final answer.

As the lesson progresses, students are given more complex multiplication problems to solve, such as 47 times 26, 24 times 31, 53 times 13, and 72 times 34, reinforcing their skills in long multiplication. Each step of the calculation is clearly laid out, allowing students to understand the process of multiplying individual digits and then adding them together. The lesson also incorporates reasoning activities where students must agree or disagree with statements regarding multiplication results and explain their reasoning. For example, they explore whether it is possible to get a product of 999 by multiplying two two-digit numbers, and they discuss the importance of using zero as a placeholder in multiplication. These activities not only test the pupils' computational skills but also their ability to understand and articulate mathematical concepts.