Page 15 - Mathematics

Solution 1
In order to represent on a number line, take one unit from 0 towards the
4
right side and then divide that unit into 4 equal parts. Take one part out of
1 1
the 4 parts to complete a part representing . Therefore, on a number
4 4 Tanzania Institute of Education
line is represented as shown in the following number line.

Example 2.2

Represent 2.4− on a number line.

Solution
4
− 2.4 = − 2
10
2
= − 2
5
To represent 2.4− on a number line, take 2 units from 0 towards the left
side and then divide the third unit into 5 equal parts. Take 2 parts out of the

5 parts to complete a part representing 2.4.− Therefore, 2.4− on a number
line is represented as shown in the following number line.

-3 -2.4 -2 -1 0

Example 2.3

13 13
Represent and − on the same number line.
5 5

Solution Mathematics Form One
13 13 3
Convert into a mixed number. That is, 2
5 5 5

9

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Mathematics form 1.indd 9 25/10/2024 09:51:02
Mathematics form 1.indd 9