The first of several livestreams happening every Friday at 4pm (GMT +1) discussing the topics of the Tom Rocks Maths Appeal GCSE Maths series. The topic this week is Percentages, Decimals and Fractions – full list of questions discussed (with timestamps) below.

All questions discussed in the video (with timestamps).

• 1:40 – How do you convert a recurring decimal into a fraction?
• 6:55 – What happens when you increase a number by 10% forever?
• 12:50 – How does exponential growth/decay work?
• 21:28 – Gameshow: Which is larger?
• 33:27 – What is your favourite fraction?
• 37:07 – What is your favourite proof?
• 48:45 – What was the Reynolds number for your PhD experiments?
• 49:38 – How do you prove the formula for the sum of consecutive integers?

Watch the lesson on Percentages, Decimals and Fractions here.

Bobby and Susan from Maths Appeal answer viewer’s questions here.