Integers Term 1 2016

Read about what an integer is What is an integer?

Integers on a number line...Use the interactive number line

Adding and subtracting Integers.... READ...Rules about adding and subtracting integers

The Rules:

It can all be put into two rules:

	Rule		Example
	Two like signs become a positive sign	+(+)	3+(+2) = 3 + 2 = 5
		−(−)	6−(−3) = 6 + 3 = 9
	Two unlike signs become a negative sign	+(−)	7+(−2) = 7 − 2 = 5
		−(+)	8−(+2) = 8 − 2 = 6

They are "like signs" when they are like each other (in other words: the same).
So, all you have to remember is:
Two like signs become a positive sign
Two unlike signs become a negative sign

Try this Casey Runner... interactive

Multiplying Integers Multiplying Integers

Add and subtract integers....Walk the plank