Page 39 - Math Smart - 7

Example 1

Which number is smaller? Use the number line to help you.
a) 2 or 4 b)-2or0 c)-3or-1

The number 2 lies to the left of the number 4 on the number line.
The number 2 is smaller than the number 4.

< l l l l l ! l l l l i l » l » l l l l i h
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
2<4
The number -2 lies to the left of the number 0 on the number line.
The number -2 is smaller than the number 0.

-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
-2<0
The number -1 lies to the right of the number -3 on the number line.
The number -1 Is bigger than the number -3.

- l i l l l l l t l t i l l l l l l l l l h
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
-3<-1

Check My
Understanding
Trisha compared the
minimum temperatures in
GROUP WORK;
O Your teacher will give each pupil an integer card. five different places on a
© The class must decide among themselves how to peg their integers on the particular day. She recorded
the temperatures in the table
washing line.
below.
© Pupils have to place their integer cards in order, so that the number
cards are arranged from the smallest integers on the left, to the greatest Place Temperature
integers on the right.
Russia -30«C
O Once everyone has pegged their cards on the line, stand back and check
United -rc
the positions of the integers. Are they in the correct order? Suggest Kingdom
corrections if not.
Iceland -23<'C
South Africa 15°C
India 0°C

List the countries in order
from coldest to warmest.