This video is a walkthrough of finding the nth term …. please do
– stop the video
– work through the questions
– compare your solutions
I hope the video helps and please do leave a comment – thanks!
Download a copy of the questions here: QT Sequences
Here’s a copy of the written answers: QT Sequences ANSWERS
Here’s the questions:
1. The first four terms in a sequence are 7 13 19 25
Write down the next two terms in the sequence.
Explain how you got your answer.
2. The nth term of a sequence is 4n + 4
Find the first two terms of this sequence
Is 32 a term in the sequence? Show how you got your answer.
3. The nth term of a sequence is n2 + 5
Find the first three terms of the sequence Find the 12th term in the sequence.
4. Here are the first five terms of a sequence 32 26 20 14 8
Find the first negative term in the sequence
Is -30 a term in the sequence? Give a reason for your answer.
5. The first 5 terms of an arithmetic sequence are 5 7 9 11 13
Find an expression, in terms of n, for the nth term of this sequence
6. The first 5 terms of an arithmetic sequence are 0 -2 -4 -6 -8
Find an expression, in terms of n, for the nth term of this sequence
Here’s the timestamp:
0:00 Intro
0:30 Question 1
1:19 Question 2
2:50 Question 3
4:27 Question 4
6:09 Question 5
7:20 Question 6
These types of questions appear in all the main GCSE exam boards – Edexcel, AQA, OCR and Educas – and are fairly common for non calculator papers.
Top Tips!
- Always work methodically and show your working
- Why is that information in the first few lines?
- Check your calculations
- Is it a reasonable answer?
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Please do leave a comment below if you are not sure. Alternately you can view my YouTube channel and leave a comment there – I’ll always try to respond as quickly as possible.
Watch on YouTube:
Find the nth Term – Quick Reminder Maths
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