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Grades 6, 7 and 8 - Math - Middle School - Number Sequences - Mixing Arithmetic and Geometric Sequences
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Avg score: 62% • Most missed: “Which series of numbers below is a geometric sequence?”

In the arithmetic sequence there exists a constant number that is either added to or subtracted from each number in the series.  In the geometric sequence, you have a constant number that is multiplied to each of the numbers in the series.
 

Grades 6, 7 and 8 - Math - Middle School - Number Sequences - Mixing Arithmetic and Geometric Sequences
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9 Questions

1. Which series of numbers below is a geometric sequence?
2. In the following arithmetic sequence, determine what the constant number is.
(22, 40, 58, 76, 94, 112)
3. In the following geometric sequence, determine what the constant number is.
(15, 45, 135, 405, 1,215)
4. Which series of numbers below is a geometric sequence?
5. Which series of numbers below is NOT a geometric sequence?
6. In the following arithmetic sequence, which number is missing from the series?
(64, 52, 40, 28, __, 4)
7. In the following geometric sequence, which number is missing from the series?
(2, 18, 162, 1,458, _____, 118,098)
8. In the following arithmetic sequence, which number is missing from the series?
(78, 83, 88, 93, _____, 103, 108)
9. Which series of numbers below is NOT an arithmetic sequence?

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