Math Practice
Substitute each value of the index from the bottom limit to the top, then add. Watch for indexes that start at 0 or 2.
Evaluate
Evaluate
Evaluate
The term doesn’t depend on
How many terms does
From 3 to 12 inclusive is
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Evaluate
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Evaluate
Evaluate
Evaluate
Evaluate
The first 8 odd numbers add to
Evaluate
Mathematics verification: Mathematical formulas, calculations, worked examples and solutions are reviewed for accuracy before publication. How we check our work
These problems follow the sigma notation lesson. Write the terms out before adding until the pattern is familiar.
Replace k with each whole number from the lower limit to the upper limit, write out each term, and add them.
Upper limit minus lower limit, plus one. A sum from k = 3 to 12 has 10 terms.
Type numbers without units or commas, and fractions like 7/9. For formulas, use n and ^ for powers, such as 3n - 1 or 5*2^(n - 1).