Working With Negative Numbers (Leaving Cert Mathematics): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Definition of integers
Definition of integers
Positive & negative whole numbers including zero
Symbol representing the set of integers
Symbol representing the set of integers
(from German 'Zahlen' meaning numbers)
Rule: adding integers with same sign
Rule: adding integers with same sign
Add values and keep the common sign
Rule: adding integers with different signs
Rule: adding integers with different signs
Subtract, keep sign of larger absolute value
Sign rule:
Sign rule:
- like signs give positive
Sign rule:
Sign rule:
- unlike signs give negative
Term for removing brackets from expressions
Term for removing brackets from expressions
Expanding
Rule when removing brackets
Rule when removing brackets
Multiply outside term by every term inside brackets
BIMDAS acronym stands for
BIMDAS acronym stands for
Brackets, Indices, Multiply, Divide, Add, Subtract
First step in BIMDAS order
First step in BIMDAS order
Brackets
What does 'I' represent in BIMDAS?
What does 'I' represent in BIMDAS?
Indices (or powers)
Result of
Result of
(like signs = positive)
Result of
Result of
(unlike signs = negative)
Simplify:
Simplify:
(double negative equals positive)
Calculate:
Calculate:
(same sign: add values, keep sign)