# Formula

An algebraic statement with a letter equal to an expression. Used to work out a missing variable by substituting in all other known variables. Plural is formulae.

# Factorise (fully)

Write the expression using brackets.

# Function Machine

A diagram showing the inputs, function(s) and outputs.

# Function

A set operation that is applied to a set of inputs.

# Fair

All outcomes have the same probability of happening.

Example: An un-biased coin is fair, as both sides have a 50% chance of landing on them.

🔑 Key Acute Topics: Basic Probability
👀Also Look Up: Probability

# Frequency Table

A table showing data in groups rather than in lists.

Example: Complete the frequency table.

# Frequency

Total number of times.

Example: Complete the frequency table.

# Find

Show some calculations to show how you get to the final answer.

Example: Find the sum of…

🔑 Key Find Topics: Pythagoras

# Factorial – !

The operation which multiplies a number by all the whole numbers proceeding it all the way down to 1.

Example  5! = 5 x 4 x 3 x 2 x 1

🔑 Key Factorial Topics: Combinations