Grade 8 Geometric Sequences Worksheet
This worksheet focuses on identifying, extending, and finding the nth term of geometric sequences for Grade 8 students.
Includes
Standards
Geometric Sequences
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all your work for full credit.
1. Which of the following sequences is a geometric sequence?
2, 4, 6, 8, ...
3, 6, 12, 24, ...
1, 3, 5, 7, ...
10, 7, 4, 1, ...
2. What is the common ratio of the sequence 5, 10, 20, 40, ...?
2
5
10
40
Complete the next three terms of each geometric sequence.
3. 3, 9, 27, , ,
4. 160, 80, 40, , ,
5. Find the 6th term of the geometric sequence where the first term is 2 and the common ratio is 3.
6. A geometric sequence has a first term of 100 and a common ratio of 1/2. What is the 5th term?
7. In a geometric sequence, each term is found by adding a constant value to the previous term.
True
False
8. The formula for the nth term of a geometric sequence is a_n = a_1 * r^(n-1).
True
False
9. A bacterial colony starts with 50 bacteria and doubles every hour. How many bacteria will there be after 4 hours?
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