Year 8
The nth term rule: Position-to-term for arithmetic sequences
Year 8
The nth term rule: Position-to-term for arithmetic sequences
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Lesson details
Key learning points
- In this lesson, we will learn to find and understand the nth term rule for arithmetic sequences.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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3 Questions
Q1.
Look at the number grid shown on the right. Write down the column and row that match the tracking calculation 5 x 3 - 1
Row 1 Column C
Row 3 Column B
Row 3 Column E
Q2.
Look at the same number grid. Pick the tracking calculation that matches column E row 25.
5 x 24 + 1
5 x 25
5 x 25 - 1
Q3.
Look at the same number grid. Which column and row would 38 fall into?
Row 8 Column C
Row 9 Column B
Row 9 Column C
5 Questions
Q1.
Which column has the position-to-term rule 4n + 1?
A
B
D
Q2.
Which column has the position-to-term rule 4n - 1?
B
C
D
Q3.
Work out the position-to term-rules for column a.
5n + 11
5n + 6
6n + 1
Q4.
Work out the position-to term-rules for column b.
6n + 3
8n
8n + 14
Q5.
Work out position-to-term rules for the sequence 3, 7, 11, 15, 19, ...
3n
3n + 7
4n + 1