Reverse % done forwards
After 20% off, a price is $64. Original = 64 × 1.2 = $76.80
Original = 64 ÷ 0.8 = $80
IGCSE MATHS · CAMBRIDGE 0580 & EDEXCEL 4MA1
Must-Know Formulas & Top Mistakes
Everything you need to remember, and the slips that cost marks, on one page per topic.
Rs 499
Pay by JazzCash, Easypaisa or bank transfer. PDF sent on WhatsApp.
13
13 topics, one page each
62
62 common mistakes, shown wrong vs right
16
16-page printable A4 PDF
A taste of what's inside
Calculator in radians
sin 30 = −0.988
Set to degrees: sin 30° = 0.5
Topics covered
- Number
- Algebra 1
- Algebra 2
- Functions
- Coordinate geometry
- Angles & circle theorems
- Similarity & congruence
- Mensuration
- Trigonometry & Pythagoras
- Vectors & transformations
- Probability
- Statistics
- Differentiation
How to buy
- 1
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Who made it
Written by a Cambridge-certified maths tutor, teaching IGCSE and A Level since 2010.
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