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Lesson details

Key learning points

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

Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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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?
An image in a quiz
12
16
Correct answer: 24
8
Q3.
What is the value of this expression if a = 5?
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-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?
An image in a quiz
Correct answer: Equation
Expression
Identity
Q4.
Is the following an expression, equation, or identity?
An image in a quiz
Equation
Expression
Correct answer: Identity
Q5.
If x=5, which symbol should go in the box?
An image in a quiz
Correct answer: =
Q6.
If x=5, which symbol should go in the box
An image in a quiz
=
Correct answer:
Q7.
If x=5, which symbol should go in the box
An image in a quiz
Correct answer: =
Q8.
If x=5, which symbol should go in the box
An image in a quiz
=
Correct answer:

Lesson appears in

UnitMaths / Forming and solving equations