Number Skills
What is place value?
The value of a digit based on its position in a number.
What does the numerator in a fraction show?
How many parts are being considered.
What does perimeter measure?
The distance around the outside of a shape.
What is a pronumeral?
A letter that represents a number.
What is the pattern in the following numbers?
5, 8, 11, 14, 17 …
Add 3 each time
What does it mean to round a number?
To approximate a number to a given place value.
What is the simplest equivalent fraction for 40%?
2/5
What does area measure?
The space inside a 2D shape.
What does it mean to “simplify” an expression?
To collect like terms or write it in the shortest possible form.
Which direction does the y-axis follow?
Vertical
What is the difference between a factor and a multiple?
A factor divides into a number exactly; a multiple is a product of the number.
Why do we find a common denominator when adding fractions?
So the fractions are referring to the same-sized parts.
What does volume measure?
The space inside a 3D object.
What does it mean to “expand” brackets?
Multiply everything inside the brackets by the number/term outside.
What does a coordinate pair (x, y) tell you?
The position of a point on a graph (x is across, y is up/down).
What is the difference between a prime and a composite number?
Prime has only two factors (1 and itself); composite has more than two.
500: What is the difference between a rational and an irrational number?
What is the connection between decimals and fractions?
A decimal is another way of writing a fraction with a denominator of 10, 100, 1000, etc.
Why do we use squared units for area?
Because area is measured in squares (length × width).
What is the difference between an expression and an equation?
An expression has terms and operations but no equals sign; an equation has an equals sign.
What is a linear relationship?
A relationship that forms a straight line on a graph.
Why is zero not considered a prime number?
Because primes must have exactly two factors (1 and itself), but zero has an infinite number of factors.
Why are fractions, decimals, and percentages called “equivalent forms”?
Because they can all represent the same value in different ways.
What is the difference between surface area and volume?
Surface area is the total area of all outer surfaces; volume is the space inside.
Why do we use algebra instead of just numbers?
Algebra allows us to represent unknown values, generalise patterns, and solve problems that apply to many situations, not just one number.
What does the point (0, 0) represent on a Cartesian plane, and why is it important?
It is the origin, the point where the x-axis and y-axis meet. It’s important because it is the starting reference point for plotting all other coordinates.