Lesson details

Key learning points

  1. In this lesson, we will learn how to find terms in growing pattern sequences using squares and dots.

Licence

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5 Questions

Q1.
What is the tracking calculation for the grouping of this 3-chain?
An image in a quiz
27
8 + 8 + 1
Correct answer: 8 x 3 + 1
9 x 3 + 1
Q2.
If the tracking calculation for this 3-chain is 8 x 3 + 1, what would the tracking calculation for a 20-chain?
An image in a quiz
20 x 3 + 1
Correct answer: 8 x 20 + 1
8 x 3 + 20
Q3.
What is the tracking calculation for the grouping of this 3-chain?
An image in a quiz
3 x 6 + 3 +1
Correct answer: 3 x 7 + 3 + 1
3 x 7 + 4
3 x 8 + 3 + 1
Q4.
If the tracking calculation for this 3-chain is 3 x 7 + 3 + 1, what would be the tracking calculation for an 100-chain?
An image in a quiz
Correct answer: 100 x 7 + 100 + 1
100 x 7 + 3 + 1
100 x 7 + 4
3 x 100 + 100 + 1
Q5.
Using the grouping of this 3-chain, what is the tracking calculation for an n-chain? Write you answer as an algebraic expression.
An image in a quiz
3n + 1
3n + 8
Correct answer: 8n + 1
n x 8 + 1

5 Questions

Q1.
Which definition best describes an arithmetic sequence?
Correct answer: A sequence of numbers with a constant difference between each term.
A sequence that goes up by 2 each time.
A sequence where we can easily find the nth term.
A sequence where we cannot find the nth term.
Q2.
Which of the following is NOT an arithmetic sequence?
-2n - 4
-3, -1, 1, 3, 5, ...
0.5, 1.5, 2.5, 3.5, 4.5, ...
Correct answer: 2, 4, 8, 16, 32, ...
Q3.
Which of the following statements is true?
Arithmetic sequences cannot have decimal numbers in them.
Arithmetic sequences cannot have negative numbers in them.
It is impossible to find the nth term of a sequence that isn't arithmetic.
Correct answer: It is possible to find the nth term of a sequence that isn't arithmetic.
Q4.
How many squares does the next term in this sequence have?
An image in a quiz
16
19
Correct answer: 21
26
Q5.
What is the nth term of the sequence in the image?
4n - 3
5n - 3
Correct answer: 5n - 4
n + 5

Lesson appears in

UnitMaths / Sequences