All topicsSequences & SeriesSigma notation
Grade 12 · Free practice
Sigma notation
Read and write sums compactly and expand a sigma expression into its terms.
Try it: three questions
Real questions from the practice bank. Tap an answer to check it.
Question 1 of 3
Evaluate $\sum_{k=1}5 (3k - 2)$.
Question 2 of 3
Evaluate $\sum_{k=1}4 (k2 + 2k)$.
Question 3 of 3
Evaluate $\sum_{i=1}4 (i2 + 2i)$.
How this fits in
Sigma notation is one skill in the Sequences & Series unit. Students read the unit lesson, then earn a bronze, silver, or gold medal on their last 10 answers. Medals never go down. A mastered unit comes back for review after 1, 3, 7, 16, and 35 days so it stays learned.
Practice sigma notation until it sticks
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