Lesson details

Key learning points

  1. In this lesson, we will look at the difference between an equation and an identity.

Licence

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5 Questions

Q1.
Which of the following are expressions?
10 = 2e
3a + 2 = 5
Correct answer: 4b + 3c
Correct answer: 6d + 4
Q2.
What is the value of the cubes if a = 4?
12
16
Correct answer: 24
8
Q3.
What is the value of this expression if a = 5?
-3
29
5
Correct answer: 9
Q4.
Which expression has the greatest value when a = 7?
2a + 1
3a - 6
Correct answer: Neither - they are both equal
Q5.
Which expression has the greatest value when a = 4?
Correct answer: 2a + 1
3a - 6
Neither - they are both equal

8 Questions

Q1.
If a = 3, which of the following is true?
Correct answer: 3a + 4 = 5a - 2
4a + 1 = 12
6a = 3 - a
Q2.
Which description best fits an identity?
A collection of variables
Something that can always be solved to find a value
Correct answer: Something that is always true, whatever the value
Q3.
Is the following an expression, equation, or identity?
Correct answer: Equation
Expression
Identity
Q4.
Is the following an expression, equation, or identity?
Equation
Expression
Correct answer: Identity
Q5.
If x=5, which symbol should go in the box?
Correct answer: =
Q6.
If x=5, which symbol should go in the box
=
Correct answer:
Q7.
If x=5, which symbol should go in the box
Correct answer: =
Q8.
If x=5, which symbol should go in the box
=
Correct answer:

Lesson appears in

UnitMaths / Forming and solving equations