Fractions, Decimals, and Significant Figures (Leaving Cert Mathematics): Flashcards

Fractions that represent the same value

Numerator & denominator have no common factors except 1

Use common denominator, compare numerators

Divide numerator by denominator

Use place value of final digit

Decimal where digit(s) repeat indefinitely

Bar over repeating digit(s), e.g. $0.\overline{6}$

Meaningful digits showing precision of a number

Not counted as significant (must be written though)

Not significant - placeholders only

First non-zero digit

$0.375$

$\frac{1}{8}$