Home > Middle School > Quizzes > Grades 6, 7 and 8 - Math - Middle School - Number Sequences - Geometric Sequences
Grades 6, 7 and 8 - Math - Middle School - Number Sequences - Geometric Sequences
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 85% Most missed: “Which series of numbers below is NOT a geometric sequence?”

A geometric sequence is a series of numbers in which each preceding term or number is multiplied by the same constant number.  For example: 1, 2, 4, 8, 16, 32, 64, 128

In this series, the constant number is “2” and each preceding number is multiplied by “2” as follows:

x 2 = 4
x 2 = 8
x 2 = 32
x 2 = 64
x 2 = 128

Looking at our series above, you would have 2 ÷ 1 = 2.  The number “2” was the constant number here.

Grades 6, 7 and 8 - Math - Middle School - Number Sequences - Geometric Sequences
Time left 00:00
10 Questions

1. In the following geometric sequence, determine what the constant number is.
(4, 28, 196, 1,372, 9,604)
2. In the following geometric sequence, which number is missing from the series?
(11, 33, 99, 297, _____, 2,673, 8,019)
3. In the following geometric sequence, determine what the constant number is.
(27, 54, 108, 216, 432, 864)
4. Which series of numbers below is NOT a geometric sequence?
5. In the following geometric sequence, which number is missing from the series?
(2, 200, 20,000, 2,000,000, _____)
6. In the following geometric sequence, which number is missing from the series?
(11, 33, 99, 297, _____, 2,673, 8,019)
7. Which series of numbers below is NOT a geometric sequence?
8. Which series of numbers below is NOT a geometric sequence?
9. In the following geometric sequence, which number is missing from the series?
(3, 21, 147, 1,029, _____, 50,421)
10. In the following geometric sequence, determine what the constant number is.
(4, 28, 196, 1,372, 9,604)