GCSE Maths
GCSE Maths Trial and Improvement (Cubics) Exam Questions
Free GCSE Maths exam questions on Trial and Improvement (Cubics), with full model answers. Covers solving cubic equations by trial and improvement.
Trial and Improvement (Cubics) exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
About GCSE Maths Trial and Improvement (Cubics)
Trial and Improvement (Cubics) is a Grade 5+ GCSE Maths topic, so it mostly comes up on Foundation and Higher tier papers. These questions suit WJEC GCSE. Work through the pack without notes, then mark every answer against the model answers and redo any you got wrong a few days later.
What you need to know
- Method Substitute and compare with the target.
- Midpoint Test to decide rounding.
- Table Record each trial.
Common mistakes in Trial and Improvement (Cubics)
- Not checking the midpoint.
- Arithmetic errors.
Try two Trial and Improvement (Cubics) exam-style questions
1. x³ + x = 20 has a solution between 2 and 3. Find x³ + x for 2.5. (1 mark)
Show the mark scheme answer
18.125
2. Is the answer above or below 2.5? (1 mark)
Show the mark scheme answer
Above
Trial and Improvement (Cubics) FAQs
Which exam boards include Trial and Improvement (Cubics)?
These questions suit WJEC GCSE.
What grade is Trial and Improvement (Cubics) in GCSE Maths?
It is a Grade 5+ topic, so it mostly appears on Foundation and Higher tier papers.
How should I use these Trial and Improvement (Cubics) questions?
Answer every question without notes, then check each answer against the model answers and redo the ones you got wrong.
