Multiplication: 2 digit by 2 digit numbers video
The video uses the scenario of a student helping her younger brother with a maths problem. They explore and discuss methods for solving the problem: ‘How many months has a 25 year old been alive?’ We show how prior knowledge is required to know what type of calculation to perform, before exploring and discussing different multiplication strategies that use partitioning. Area model, box model and vertical algorithm methods are then demonstrated.
Access the supporting teaching guide that provides suggestions to follow up video.
|Year 4, Year 5
|Teaching strategies and pedagogical approaches
|Worked examples, Concrete Representational Abstract model
|Real world maths
|Strand and focus
|Multiplication and division
|AC: Mathematics (V9.0) content descriptions
Develop efficient strategies and use appropriate digital tools for solving problems involving addition and subtraction, and multiplication and division where there is no remainder
Solve problems involving multiplication of larger numbers by one- or two-digit numbers, choosing efficient calculation strategies and using digital tools where appropriate; check the reasonableness of answers
Multiplicative strategies (P7)
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