Exam-style question
Try this first
Exam warm-up: simplify 3x + 4x by collecting like terms.
- A.7x
- B.8
- C.6
- D.14
Answer and explanation
Attempt the question first, then reveal the model answer and explanation.
Maths method check
- Topic focus: Measures and accuracy.
- Question style: practice.
- Reasoning demand: recall.
- Check the operation, notation, units, and final answer form against the question before moving on.
Common mistake
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