Checking understanding of algebraic notation
I can represent situations using algebra.
Checking understanding of algebraic notation
I can represent situations using algebra.
Lesson details
Key learning points
- Missing numbers can be found in context.
- Missing number problems can be expressed algebraically.
- Pairs of numbers that satisfy an equation with two unknowns can be found.
- Real life situations can be expressed using algebra.
Common misconception
When converting English to algebra, pupils can mix up 4x + 2 and 4(x + 2)
Reviewing priority of operations and expanding brackets may be helpful. The multiplier operates on all terms in the bracket.
Keywords
Integer - An integer is any positive or negative whole number or zero
Expression - An expression contains one or more terms, where each term is separated by an operator.
Equation - An equation is used to show 2 expressions that are equal to each other.
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
$$5 + 3\times 2 + 1$$ -
12
$$(5 + 3)\times 2 + 1$$ -
17
$$(5 + 3)\times (2 + 1)$$ -
16
$$5 + 3\times (2 + 1)$$ -
14
$${10-4\over 2} + 1$$ -
4
$$10-{4\over 2} + 1$$ -
9
$$10-4\over 2 + 1$$ -
2
$$10-{4\over 2 + 1}$$ -
$$26\over 3$$
Exit quiz
6 Questions
$$-{x\over 4}$$ -
$$-{1\over 4} x$$
$$4x\over- 5$$ -
$$-{4\over 5} x$$
$$-5x\over 4$$ -
$$-{5\over 4} x$$
$$-x\over -4$$ -
$${1\over 4} x$$
$$-10x\over -8x$$ -
$$\frac{5}{4}$$
$$3b - 7$$ -
a number multiplied by 3 then subtract 7
$$3(b - 7)$$ -
a number subtract 7 then multiplied by 3
$$b - 7 \times 3$$ -
a number subtract the product of 7 and 3
$$7 - 3b$$ -
a number multiplied by 3 then subtracted from 7
$$3(7 - b)$$ -
a number subtracted from 7 then multiplied by 3