Page 16 - Mathematics

3
= 2+ .
5

To draw a number line, take 2 units from 0 towards the right side and then
divide the third unit into 5 equal parts. Add the 2 units and the 3 parts out of
13 13
the 5 parts to complete . Also, convert − into a mixed number, that
3 5 5
is, 2.−
5

Repeat the same procedure from 0 to the negative side of the number line to
13 13 13
represent − . Therefore, and − on a number line are represented
Tanzania Institute of Education
5 5 5
as shown in the following number line.

Exercise 2.1

1. Represent each of the following rational numbers on a number line.

1 3
(a) 5 (c) (e) (g) 0
5 4
3
7
(b) (d) 4.5 (f) (h) 3 3
3 2 4
2. Show the position of each of the following rational numbers on a number
line.
2 16 25 5
(a) 2 (c) (e) (g)
3 8 6 5
6 0 25 50
(b) (d) (f) 50 (h) 25
1
3
Mathematics Form One 4. (a) 3 (b) − (c) –3 11 3 1
3. Represent each of the following numbers on a number line.
5
2
(a) Write all negative and positive rational numbers from the following
list of numbers.

2.85, 7.14, 12.64646464,
5,− 0, 12, 3.416520...,−
3
10 5 , − 5 , − 2.

25/10/2024 10:24:22
Mathematics form 1.indd 10
Mathematics form 1.indd 10 25/10/2024 10:24:22