Essential Mathematics Year 10
Rationalising the denominator (10A)
Indices and surds
09:11
Lesson length
8
Chapters
Ready to watch the full lesson?
MaffsGuru members enjoy a full year of clear, classroom-style maths videos — plus notes, worksheets, and tools to help you learn and revise with confidence. One simple membership, one-off payment, and no auto-renewal.
Current chapter
—
Watch progress
0%
Playback speed
1.0×
Course
Indices and surds
About this lesson
This video is another in the Year 10 Advanced course looking at surds. Having looked at how to add, subtract, multiply and divide them I finish this video looks at what it means to rationalise the denominator. Convention states that we're not permitted to have a surd on the bottom of a fraction and so we use a simple, but effective, trick to help "get rid of the the surd". There are a number of examples throughout this video all explained using clear and easy to understand language.
Lesson chapters
- Introduction
- Learning Objectives
- Recap of past learning
- Recap: Multiplying a surd by itself
- Multiplying a fraction by a number which doesn't change the size of the fraction?
- One can take many forms
- Rationalising the denominator
- Summary
Video details
- Title Rationalising the denominator (10A)
- Section Indices and surds
- Course Essential Mathematics Year 10
I would be grateful if you can support my work by subscribing to my YouTube channel.
maths tutorials
year 10 maths
grade 10 maths
year 10 advanced maths
advanced maths
rationalising the denominator
rationalizing the denominator
how do I rationalise the denominator
removing surds from the bottom of fractions
maths help
rationalize the denominator and simplify
Chapter index
Select a line to jump to that point in the video.
Chapter navigation is available to members.
Lesson discussion
Stuck on a step? Wondering about a concept? Leave a question below — Darren and the MaffsGuru team read every comment.