Like terms
I can identify like terms in an expression, generalising an understanding of unitising (equality).
Like terms
I can identify like terms in an expression, generalising an understanding of unitising (equality).
Lesson details
Key learning points
- Bar models can be used to represent an expression.
- Each term can be unitised just like numbers when using place value.
- Like terms can be identified and described.
- Coefficients help us describe terms.
Common misconception
2y and 3y are not like terms because they have different coefficients.
Think of 'Unitising'. 3cm and 8cm. What are the units? 8mg and 10mg. What are the units? 2y and 3y. What are we 'unitising' here?
Keywords
Unitising - Unitising means treating groups that contain, or represent, the same numbers of things as ‘ones’ or ‘units’.
Like terms - Like terms are terms that have the same set of variables and corresponding exponents.
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
$$3 \times x$$ -
$$3x$$
$$2 \times x$$ -
$$2x$$
$$x \times x$$ -
$$x^2$$
$$x \times x \times x$$ -
$$x^3$$
$$x \times y$$ -
$$xy$$
$$x \times y \times z$$ -
$$xyz$$
$$y \times z$$ -
$$yz$$
$$y \times z \times z$$ -
$$yz^2$$
$$y \times y \times z$$ -
$$y^2z$$
$$y \times z \times 2$$ -
$$2yz$$
Exit quiz
6 Questions
$$2xy$$ -
$$-xy$$
$$5xyz$$ -
$${{1} \over {2}}xyz$$
$$-xz$$ -
$$0.1xz$$
$${{1} \over {2}}yz$$ -
$$2yz$$
$$0.1y$$ -
$$5y$$
$$-a^2b$$ -
$$5a^2b$$
$$ab^2$$ -
$$-ab^2$$
$$2ab^2c$$ -
$$ab^2c$$
$$3a^2b^2$$ -
$$2a^2b^2$$
$$4a^2bc$$ -
$$3a^2bc$$
$$5a^2bc^2$$ -
$$4a^2bc^2$$