Problem solving with expressions and formulae
I can use my knowledge of expressions and formulae to solve problems.
Problem solving with expressions and formulae
I can use my knowledge of expressions and formulae to solve problems.
Lesson details
Key learning points
- Expressions can be used whenever you wish to generalise.
- This can be very useful when there is something you do not know and wish to calculate.
- Situations involving expressions can occur in a variety of contexts.
Common misconception
When subtracting expression pupils forget to subtract both terms from the second espression.
Watch out for mistakes with negatives here. Pupils should find it much easier to re-write subtractions as additions of additive inverses and that way they only need to add.
Keywords
Binomial - A binomial is an algebraic expression representing the sum of exactly two unlike terms.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
$$(x + 5)(x + 1)$$ -
$$x^2 + 6x + 5$$
$$(x + 5)(x - 1)$$ -
$$x^2 + 4x - 5$$
$$(x - 5)(x + 1)$$ -
$$x^2 - 4x - 5$$
$$(x - 5)(x -1)$$ -
$$x^2 - 6x + 5$$
$$(x + 2)^2$$ -
$$x^2 + 4x + 4$$
$$(x - 2)^2$$ -
$$x^2 -4x + 4$$
Exit quiz
6 Questions
