Practice Sum Of The First 𝑛 Terms (4) - Arithmetic Sequences - IB 10 Mathematics

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6 sample questions

Question 1.
Calculate the sum of the first 5 terms of the sequence 3, 6, 9, 12.
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Use the sum formula with n = 5.
Question 2.
What is the common difference in the sequence 10, 12, 14, 16?
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Subtract 10 from 12.
3Question 3.
What does S_n represent?
- Sum of the first n terms
- Series of n numbers
- Difference of n terms
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Think about what you calculate when you add terms.
4Question 4.
True or False: The formula for S_n can vary based on the information you have.
- True
- False
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Consider the different forms of the sum formulas.
Question 5.
You invest $100 monthly, increasing by $50 each month. Calculate the total after 12 months using the sum formula.
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Identify a, d, and use the sum formula.
Question 6.
If the first three terms of an arithmetic sequence are 2, 5, and 8, find the sum of the first 20 terms.
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Use the formula for S_n involving a and d.

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