Page 38 - Mathematics

5. Represent the given set of real numbers on a number line: 0.2, 0.4, 0.6,
and 0.8.
6. Locate three consecutive integers on a number line which are immediate

greater than 5.−
7. Represent the following numbers on a number line.

23 32
0.2, 0.4, 0.6,− , 6,
5 7
8. Represent each of the following inequalities on a number line.
5 1 5 1
x
(a) − < <− (d) x <− or x >− 2
Tanzania Institute of Education
2 2 2 3
1 7 1
(b) ≤< (e) 2 << 5
x
x
2 2 4
2
x
x
4
(c) − <≤ (f) 3−≤ ≤ 4
3
9. Represent each of the following information on a number line.
(a) The expected mass of a human at birth is at least 3 kg and less than
5 kg.
(b) A manufacturing company produces buckets of at least 20 cm .
3
(c) The mass of students in a class is at most 50 kg and not less than
35 kg.
10. On a certain number line, numbers are placed at an interval of 1 unit.
(a) What number is 6 units to the right of 4?−
(b) What number is 3 units to the left of 2?

Activity 2.6 guides you in representing real numbers on a number line by using
graphing tools.

Activity 2.6: Representing real numbers on a number line
by using graphing tools
Mathematics Form One 1. Identify different mathematical software which can be used in drawing

and representing real numbers on a number line.
2. Study the basic procedures for drawing and representing numbers by
using the software.
3. Use the software to draw and locate real numbers on a number line.

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Mathematics form 1.indd 32
Mathematics form 1.indd 32 25/10/2024 09:51:10