Arithmetic Sequences Gizmo | ExploreLearning

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Michal Kreiselman

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Arithmetic Sequences

Find the value of individual terms in arithmetic sequences using graphs of the sequences and direct computation. Vary the common difference and examine how the sequences change in response.

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Assessment Questions (4):

What is d, the common difference, in the arithmetic sequence 100, 98, 96, 94, 92, …?
- A. −1
- B. 2
- C. −2
- D. 100
Find the first four terms of the arithmetic sequence when a₁ = 3 and d = 2.
- A. 2, 5, 8, 11
- B. 3, 5, 7, 9
- C. 1, 3, 5, 7
- D. 3, 6, 12, 24
Compare the quantity in column A with the quantity in column B. Choose the best answer.
- A. The quantity in Column A is greater.
- B. The quantity in Column B is greater.
- C. The two quantities are equal.
- D. The relationship cannot be determined from the information given.
Find a₂₀, the 20^th term, of the arithmetic sequence 1, 3, 5, 7, 9, …
- A. 39
- B. 40
- C. 41
- D. 37

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