1. ©2009 G Dear – Not to be sold/Free to use
Stage 4
Years 7 & 8
Directed
Numbers
Introduction
Press Ctrl-A
©2009 G Dear – Not to be sold/Free to use

2. and the Positive Numbers make up the . . .
Introduction
Directed numbers have both size
and direction.
Eg.
Negative Numbers
Positive Numbers
-5,
-4,
-3,
-2,
-1, 0, +1
, +2
, +3
, +4
, +5
, …
Zero
Together, the Negative Numbers,
Zero,
and the Positive Numbers make up the . . .
Integers

3. - - - - + + Correct Wrong + + Introduction
Examples of Directed Numbers: -
Going up 10 steps. +
Going 50 km west. - +
Correct
Wrong
Going down 5 floors. - +
Going 125 km east - + V

4. - - - - + + Correct Wrong + + Introduction
Examples of Directed Numbers: -
Gaining 50 kg +
12oC fall in temperature. - +
Correct
Wrong
Withdraw $5 from Bank. - +
Finding 3 apples. - + V

5. Introduction Examples of Directed Numbers: +3 – 5 = –2 +4 -5 +3= +3 b +4 +2 -3 1
+2 – 3 = -1 c -2 -1 -1 = +2 d -2