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).

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

Watch the lesson on Percentages, Decimals and Fractions here.

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