Number sequences and patternsIB MYP Maths Extended: Flashcards

What these 13 flashcards ask

What is the common difference of 7,11,15,19?
What is the nth term of 7,11,15,19?
How do you find a and b in an+b?
Find the nth term of 20,17,14,\ldots
List the first five square numbers.
List the first six triangular numbers.
What are the differences between triangular numbers?
What is a Fibonacci-type sequence?
How do you test whether 150 is in 4n+3?
Find the 50th term of 4n+3.
What three steps help you generalise a pattern from a diagram?
Tables joined in a row seat 4,6,8,\ldots people. Rule?
Is 25 a triangular number?

Exam questions on Number sequences and patterns

A sequence begins $7,\ 11,\ 15,\ 19,\ \ldots$ and continues in the same way.
Show that $150$ is not a term in the sequence.2 marks
The first five triangular numbers are $1,\ 3,\ 6,\ 10,\ 15$ .
Find the $10$ th triangular number.2 marks
The first three terms of a sequence are $20,\ 17,\ 14$ , and the sequence continues with the same common difference.
Find an expression for the $n$ th term of the sequence.3 marks

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).