Fundamentals of Arithmetic (Leaving Cert Mathematics): Flashcards

Per hundred or out of every hundred

Put over 100, simplify if possible

Multiply by 100, add % symbol

Multiply by 100, add % sign

Divide by 100, remove % sign

Convert % to decimal, then multiply

105% (original 100% + 5% increase)

More than 100% of original (100% + VAT%)

Cost price (unless stated otherwise)

$\frac{\text{Profit}}{\text{Cost price}} \times 100$

$\frac{\text{Loss}}{\text{Cost price}} \times 100$

Identify what % given represents, find 1%, find 100%

Original price + VAT amount (>100% of original)