Page 38 - Math Smart - 7

Integers on a number line

Integers can be represented on a number line. Integers are ordered from the
smallest numbers on the left, to the greatest numbers on the right.
Integers only Include
the number 0 and Integer Number Line
positive and negative
Negative Integers Positive Integers
whole numbers.
Integers do not include
decimals or fractions.
-10 -9 -8 -7 -6 -5 ^ -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10

Zero is neither positive
^ RECALL nor negative

As you move from right to left, numbers get smaller on the
Draw a number line
from -8 to 8. Use number line.
it to compare the
As you move from left to right, numbers get greater on the
following numbers.
number line.
(a)-3 3

(b)or -1 Investigate

(c)-8
Aim: Make your own integer ruler.
Draw a number line
You will need: cardboard, a ruler, a pair of scissors, a pencil and a marker.
to help you find the
difference between Instructions:
-3 and 6.
o Cut a strip of cardboard 30 cm x 3 cm.
e Find the centre of the cardboard ruler. Mark this point as 0.
o Use your ruler. Make markings to the right and left of 0. The markings
should be at intervals of 1 cm.
o Label the integers 1 to 14 on the right of 0.
0 Label the integers -1 to -14 on the left of 0.
o Label the positive integers.

o Label the negative integers.
© Punch a hole on either end of your number line. Put a string and a
bead through it. Now you can move the bead as you count!

-10 -9-8-7-6-5-4 -3 -2-1 0 1 2 3 4 5 6 7 8 9 10
Negative Integers Positive Integers

O Store your integer ruler carefully. You will use it for future
activities.

UNIT 2 I Integers