Class 6 maths · M.6 · Expressions and Variables
Evaluate expressions with one variable for a given value
Put the given number in place of the letter, then multiply before you add or subtract.
Loading a question…
You've done today's 10 free questions.
Come back tomorrow for 10 more, or get unlimited practice with a membership.
Want more today? Print 20 more questions free, with the answers.
Already a member? Sign in.
See worked examples
f(x) = 4x − 6. Find f(−2).
Answer: -14
f(x) = −x + 5. Find f(−4).
Answer: 9
f(x) = −4x. Find f(−5).
Answer: 20
Tip: Put the given number in place of the letter, then multiply before you add or subtract.
Print a worksheet of this skill New questions and an answer key, free.
Up next
- Next in this topic Evaluate formulas from real-world contexts Class 6
- Ready for more Combine like terms with positive coefficients Class 7
Print a free worksheet with answers (20 questions).
Practise without limits
Members practise as much as they like, every day, and get the printable packs and lessons too.