What is 1/3+1/6?
Answer & explanation
Learn: Exact number and place value1/2; use sixths.
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View coverage IGCSE Mathematics Flashcards & Study Review
Read 12 sample cards from the 80-card IGCSE Mathematics foundation collection. Try recalling each answer before checking the explanation.
Version 2026-10-27 · Original foundation materials · No sign-up
What this collection covers
Extended foundations · exam years 2025–2027.
The cards preview selected ideas; they do not measure readiness for the whole examination. Your personal review schedule is available in the review tool.
Author-reviewed learning materials. Independent educator review is pending; question difficulty has not been calibrated with learner results. Check coverage and gaps before planning your preparation.
Sample flashcards, with answers
Expand 2(x+3).
Answer & explanation
Learn: Equations and algebraic structure2x+6.
What is the gradient through (1,2) and (3,8)?
Answer & explanation
Learn: Coordinates, gradients and lines3; (8−2)/(3−1).
Three red and two blue: after drawing red without replacement, P(red next)?
Answer & explanation
Learn: Probability with and without replacement2/4=1/2.
A sale price is 80 after 20% off. What was the original?
Answer & explanation
Learn: Ratios and percentage changes100; divide 80 by 0.8.
What are the roots of (x−2)(x+3)=0?
Answer & explanation
Learn: Quadratics and number patterns2 and −3.
A regular hexagon has what exterior angle?
Answer & explanation
Learn: Angles and similar shapes60 degrees.
Data are 1,2,8,9. What is the median?
Answer & explanation
Learn: Summaries from frequency data5; average the middle two.
A positive measurement is rounded to the nearest unit. How far is each error bound from the recorded value?
Answer & explanation
Learn: Carry measurement bounds through a calculationHalf a unit.
|A|=8, |B|=7, |A∩B|=3. What is |A∪B|?
Answer & explanation
Learn: Sets and function notation12.
Find the area of a trapezium with parallel sides 3,7 and height 4.
Answer & explanation
Learn: Area, volume and circular measures20 square units.
What represents frequency in a histogram with unequal class widths?
Answer & explanation
Learn: Read histogram areas and estimate grouped summariesBar area.
Use the cards as a recall routine
- Read the prompt and explain your answer before looking below it.
- Compare your reasoning with the saved answer, then revisit the linked lesson if a distinction is unclear.
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Sources and preparation route
These prompts and explanations are the site's original learning materials. The reference links below support the selected skills; they are not endorsements or official examination questions.