Practice Problems (Junior Cert Mathematics): Flashcards
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Practise the cards
11 cards from this deck
If 25% of class = 8, total students
If 25% of class = 8, total students
32 students
€50 + 20% increase
€50 + 20% increase
€60
€80 - 25% discount
€80 - 25% discount
€60
% error: measured 105cm, actual 100cm
% error: measured 105cm, actual 100cm
5%
€500 + 20% VAT - 15% discount
€500 + 20% VAT - 15% discount
€510
How to find whole when part & % known
How to find whole when part & % known
Divide part by % in decimal form
Method for % increase calculation
Method for % increase calculation
Multiply by decimal, then add to original
Method for % decrease calculation
Method for % decrease calculation
Multiply by decimal, then subtract from original
Percentage error formula
Percentage error formula
Exam tip: price answers must include
Exam tip: price answers must include
€ sign (or correct unit)
VAT + discount: which applies first?
VAT + discount: which applies first?
VAT first, then discount