AlgebraKey Stage 3

Substitute and evaluate

Replace letters with given values and evaluate the result.

  • Replace every letter with its given value.
  • Put substituted values in brackets, especially negative values.
  • Then use the correct order of operations.

Example 1

Substitute the given value and evaluate. If and , find .

Example 2

Evaluate the expression using the stated value. If , find .

Remember
For a negative value, the brackets matter: .

Your turn

Question 1

If , find

Check answer
Question 2

If , find

Check answer
Question 3

If and , find

Check answer
Question 4

If and , find

Check answer
Question 5

If and , find

Check answer
← All Algebra cardsReport a mistake

Related cards

Order of operations (BIDMAS)Simplifying by collecting like terms