Decimals, conversions and recurring decimals
Watch the whole lecture free
Make a free account to watch every lecture to the end: 7 practice questions, 1 real past-paper question with the answer explained, the mistakes that lose marks, the full-marks tip, a one-card summary and a quick quiz.
That was the teaching part. The rest of this lecture is free with an account: 7 practice questions, 1 real past-paper question with the answer explained, the mistakes that lose marks, the full-marks tip, a one-card summary and a quick quiz.
No password needed now: we email you a link to set one. Already have an account? Sign in, then come back to this page.
The teaching part (1 min) is free to watch. A free account opens the whole lecture: 7 practice questions, 1 real past-paper question with the answer explained, the mistakes that lose marks, the full-marks tip, a one-card summary and a quick quiz.
What this lecture covers
- One number, three costumes
- Fraction to decimal
Read the transcript of the teaching part
Last time
Before we start: last time, in Set notation and two-set Venn diagrams, you learned these points. Here they are again on one card. Keep them in mind, because today builds on them.
One number, three costumes
A half, zero point five, and fifty percent are the same number in three costumes. Cambridge expects you to change between them quickly and exactly. And then there is the strange case: a third is zero point three three three, and it never stops.
Fraction to decimal
A fraction is a division. To change it to a decimal, divide the numerator by the denominator. Seven eighths is seven divided by eight. That is zero point eight seven five. This decimal stops, so it is called a terminating decimal.
Chapter 3: Fractions, decimals and percentages
- Fractions and mixed numbers 5 min
- Decimals, conversions and recurring decimals 6 min
- Percentages of quantities 5 min
- Percentage change, reverse percentages and profit 6 min
Also for O Level Maths 4024
Which topics come up most in O Level Maths 4024 past papers, counted from every paper since 2004.