Unit 1: Number and Algebra
Topic 1.2: Arithmetic Sequences and Series Questions
Practice 20 exam-style questions for IB Math AI SL Topic 1.2. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1find1 mark
What is the common difference of 30, 24, 18, 12, ...?
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The first 6 terms of an arithmetic sequence are 9, 12, 15, 18, 21, 24.
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An arithmetic sequence has first term 12, common difference 5, and 18 terms.
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Which of the following is an arithmetic sequence?
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A club records the number joining each week as 16, 20, 24, 28, ...
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The arithmetic sequence is 3, 7, 11, 15, ...
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Write as a normal sum and find its value.
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A student expands as 1 + 2 + 3 + 4.
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A plant grows 6 cm in week 1, 9 cm in week 2, 12 cm in week 3, and so on.
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A gym fee is 40 dollars in week 1, 45 dollars in week 2, 50 dollars in week 3, and so on.
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Which formula is best for finding the total of the first n terms of an arithmetic series?
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Why might you find the last term first before summing an arithmetic series?
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A factory makes 260 boxes on day 1 and 15 more boxes each following day.
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