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Year 11 - Maths

Problem solving with further sequences

Further sequences

Unit Summary

In this unit, pupils consider different types of sequences such as Fibonacci and oscillating sequences. They then consolidate their knowledge of different types of sequences by solving contextual problems.

Lesson Summary

You will learn to use your enhanced knowledge of sequences to solve problems.

Key Notes

  • Compound interest can be thought of as a geometric sequence.
  • You can apply your knowledge of geometric sequences to solve compound interest problems.

Vocabulary To Learn

  • Interest: Interest is money added to savings or loans.
  • Compound interest: Compound interest is calculated on the original amount and the interest accumulated over the previous period.
  • Geometric sequence: A geometric sequence is a sequence with a constant multiplicative relationship between successive terms.
  • Common ratio: In a geometric sequence, the constant multiplier between successive terms is called the common ratio.

Common Mistakes To Avoid

  • A multiplier of 1.3 is used to increase a value by 3%

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

Compound interest can be thought of as a geometric sequence. You can apply your knowledge of geometric sequences to solve compound interest problems.

2. Use this key word in a maths sentence and explain it clearly. 'Interest'

Interest is money added to savings or loans. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: A multiplier of 1.3 is used to increase a value by 3%. Correction: A multiplier of 1.3 is used to increase a value by 30%.

More Lessons In This Unit

Browse all guides in the Year 11 Maths guide library.