Last updated on Oct 23, 2026

Sigma Notation (Edexcel A-Level Mathematics): Quizzes

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Sigma Notation

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What does sigma notation provide a compact way of expressing?

The sum of a series of terms

What does the Greek letter $\Sigma$ (capital sigma) stand for?

Sum

In $\sum_{k=m}^{n} a_k$ , what is $k$ called?

Index of summation

In $\sum_{k=m}^{n} a_k$ , what are $m$ and $n$ called?

Limits

What is $\sum_{k=1}^{5} k$ equal to?

$15$

What is $\sum_{n=1}^{4} 2$ equal to?

$8$

What does $\sum_{k=m}^{n} c \cdot a_k$ equal where $c$ is constant?

$c \cdot \sum_{k=m}^{n} a_k$

What does $\sum_{k=m}^{n} (a_k + b_k)$ equal?

$\sum_{k=m}^{n} a_k + \sum_{k=m}^{n} b_k$

What is $\sum_{k=1}^{4} k^2$ equal to?

$30$

What is $\sum_{k=1}^{6} (2k + 1)$ equal to?

$48$

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