Representing a generalised number | Maths | Quizalize & Oak National Academy

Starter quiz

An __________ is used to show one number or calculation is equal to another.
- addition
- equation ✓
- exponent
- expression
It costs £5 to enter a fairground and then £2 for each ride. How much would it cost to enter the fair and ride 3 rides? ______
- '£11' ✓
Select any calculation which represents the statement "I am thinking of a number. I multiply it by 10, then add 5, then subtract 2"
Which of these bar models represent the equation shown?
In a game, these shapes are worth different amounts of points. If a square is worth $6$ and a circle is worth $4$ , what is the total number of points in the diagram shown? ______
- '32' ✓
In a game, these shapes are worth different amounts of points. If a square is worth $2$ and a circle is worth $-5$ , what is the total number of points in the diagram shown? ______
- '-2' ✓

Match the keyword to the definition
- equation
  
  ⇔
  
  a mathematical statement showing one thing equal to another ✓
- generalised rule
  
  ⇔
  
  a statement that applies to all relevant cases in a scenario ✓
- unknown
  
  ⇔
  
  a quantity that has a set value, represented by a letter ✓
- variable
  
  ⇔
  
  a quantity that has a range of values. ✓
True or false: It is always possible to work out the value of a variable.
- True - with enough information you can use a bar model to find the value.
- False - variables do not have set values, they vary depending on the situation ✓
Which equation is represented by the bar model below?
- $y+2=x-5$
- $x+5-2=y$ ✓
- $y-2-5=x$
- $y=x-2$
Select the statement that can be represented by the equation $a-4+2=19$
- I am thinking of a number, I add 4 and 2 then subtract from my number to get 19
- I am thinking of a number, I subtract it from 19 and the answer is $4+2$
- I am thinking of a number, I subtract 4 then add 2 and my answer is 19 ✓
- I am thinking of a number, I subtract 4 and 2 to get 19
A taxi journey costs £3 plus £2 per mile travelled. Which equation represents this?
- $c=2a+3$ ✓
- $3+2=c$
- $3a+2b=c$
- $3a+2=c$
A taxi journey costs £3 plus £2 per mile. What is the maximum number of miles you could travel if you had £15 to spend? ______
- '6' ✓

Loading worksheet ...

Loading presentation ...

Pupils often think a=1 b=2 ... or that a letter represents an object

Letters represent a numerical value either unknown or variable. Avoid always using the first letter of the words used in a scenario.

Unknown - An unknown is a quantity that has a set value but it is represented by a symbol or letter.
Variable - A variable is a quantity that can take on a range of values.