FORM 3 UNIT 1
Lesson 1: Evaluating Algebraic Expressions
1 Quiz
Unit 1 Lesson 1: Exercise 1
Lesson 2: Evaluating more complex Algebraic Expressions
3 Quizzes
Unit 1 Lesson 2: Exercise 1
Unit 1 Lesson 2: Exercise 2
Unit 1 Lesson 2: Exercise 3
Lesson 3: Evaluating Algebraic Fractions
1 Quiz
Unit 1 Lesson 3: Exercise 1
Lesson 4: Addition and subtraction of algebraic terms
3 Quizzes
Unit 1 Lesson 4: Exercise 1
Unit 1 Lesson 4: Exercise 2
Unit 1 Lesson 4: Exercise 3
Lesson 5: Expanding Brackets
3 Quizzes
Unit 1 Lesson 5: Exercise 1
Unit 1 Lesson 5: Exercise 2
Unit 1 Lesson 5: Exercise 3
Lesson 6: Expanding and Simplifying
2 Quizzes
Unit 1 Lesson 6: Exercise 1
Unit 1 Lesson 6: Exercise 2
Lesson 7: Expanding Products of Algebraic Expressions (Binomial Expansion)
5 Quizzes
Unit 1 Lesson 7: Exercise 1
Unit 1 Lesson 7: Exercise 2
Unit 1 Lesson 7: Exercise 3
Unit 1 Lesson 7: Exercise 4
Unit 1 lesson 7: Exercise 5
Lesson 8: Division of algebraic terms
2 Quizzes
Unit 1 Lesson 8: Exercise 1
Unit 1 Lesson 8: Exercise 2
Next Lesson
Lesson 1: Evaluating Algebraic Expressions
FORM 3 UNIT 1
Lesson 1: Evaluating Algebraic Expressions
Objectives
At the end of this lesson, students should be able to:
Substitute numbers for words and letters in formulae.
Evaluate algebraic expressions when the value for each variable is given.
We use numbers in place of letters and symbols to calculate the actual value of an algebraic expression. This might require the use of
B
O
D
M
A
S
.
B
rackets
O
rder (squares, cubes, etc.)
D
ivision
M
ultiplication
A
ddition
S
ubtraction
Example 1
Given that
x
=
2
,
y
=
3
and
z
=
5
, find the values of the following expressions:
2x – z
3y + x
^{2}
8(x + y)
Solution
1
. 2x – z = 2 (
2
) –
5
= 4 – 5
=
– 1
2
. 3y + x
^{2}
= 3(
3
) + (
2
)
^{2}
= 9 + 4
=
13
3
. 8(x + y) = 8 (
2
+
3
)
= 8 (5)
=
40
Lesson Content
Unit 1 Lesson 1: Exercise 1
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