Fractions and mixed numbers
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The teaching part (1 min) is free to watch. A free account opens the whole lecture: 8 practice questions, 2 real past-paper questions with the answers explained, the mistakes that lose marks, the full-marks tip, a one-card summary and a quick quiz.
What this lecture covers
- Slices of a pizza
- Equivalent fractions and simplifying
Read the transcript of the teaching part
Last time
Before we start: last time, in Decimals, conversions and recurring decimals, you learned these points. Here they are again on one card. Keep them in mind, because today builds on them.
Slices of a pizza
A pizza is cut into eight slices. You eat three, your friend eats two. What fraction have you eaten together? What is left? Fractions answer these questions exactly. Today you add, subtract, multiply and divide them, with and without mixed numbers, and always give the answer in its simplest form.
Equivalent fractions and simplifying
Equivalent fractions have the same value. Multiply or divide the top and bottom by the same number. To simplify, divide top and bottom by their highest common factor. Thirty-six and forty-eight share twelve. An answer is in its simplest form when no number divides both the top and the bottom.
How often it comes up
How often Cambridge has asked each part, counted by ExamYard from every past paper in its question bank: Fractions and mixed numbers.
The whole chapter: Fractions, Decimals and Percentages.
Chapter 3: Fractions, decimals and percentages
- Fractions and mixed numbers 6 min
- Decimals, conversions and recurring decimals 6 min
- Percentages of quantities 6 min
- Percentage change, reverse percentages and profit 6 min
Also for IGCSE Maths 0580
Which topics come up most in IGCSE Maths 0580 past papers, counted from every paper since 2004.