Name that Sequence
Arithmetic
Write the Formula
Find the Missing term(s)
Geometric
100
Is the following sequence Arithmetic, Geometric or Neither? 12, 14, 16, 18, 20, .....
What is arithmetic?
100

This is the value of the 60th term when the 1st term is 5 and the common difference is -5.

What is -290?

100

The explicit formula for the arithmetic sequence: 2, 6, 10, 12, 16.......

What is un=2+4(n-1) or 4n-2

100
Find the missing term in the following Arithmetic sequence. 3, ___ ,17
What is 10?
100
This is the value of the 10th term when the 1st term is 1 and the common ratio is 3.
What is 19683?
200
Is the following sequence Arithmetic, Geometric or Neither? 3, 8, 13, 18, 22, .....
What is arithmetic?
200

The value of the 1st term when the 23rd term is 36 and the common difference is 2.

What is -8?

200

The explicit formula for the arithmetic sequence: -1, 2, 5, 8, 11

What is un=-1+3(n-1) or 3n-4

200
Find the missing term in the following Geometric sequence. 2, ____, 128
What is 16?
200
This is the value of the first term when the 5th term is 512 and the common ratio is 4.
What is 2
300
Is the following sequence Arithmetic, Geometric or Neither? 4, 11, 17, 24, 34, ....
What is neither?
300

This is the value of the 6th term when the 1st term is -12, the 5th term is 28.

What is 38?

300

The explicit formula for the sequence 3, 9, 27, 81,......

What is un = 3 * 3(n-1)

300
Find the missing term in the following Arithmetic sequence. -13, ___ ,-27
What is -20?
300
This is the term number for the value of 81 when the first term is 3, the common ratio is 3, and n – 1 = 3.
What is 4
400

Is the following sequence Arithmetic, Geometric or Neither? If so, what is the common difference or common ratio? 375, -75, 15, -3, 3/5, ........

What is geometric with r=-1/5

400
This is the value of the 125th term when the 10th term is 15 and the 11th term is 27.
What is 1295?
400

The explicit formula for the sequence: -16, -25, -34, -43, -52 Find the value of the tenth term

What is un=-16-9(n-1) or =-7-9n, u10=-97

400
Find the missing terms in the following Arithmetic sequence. 10, ____, ____ , _____, 26
What is 14, 18, 22?
400
This is the common ratio when the 1st term is 2 and the 3rd term is 72.
What is 6
500

This value of x would make the sequence Arithmetic and this other value of x would make the sequence Geometric:  100, x, 400, .....

Arithmetic: x=150, Geometric: x=2

500
This is the common difference when the first term is 25 and the 76th term is 175.
What is 2
500

What is the explicit formula for the sequence 2, 8, 32, 128, and what is the value of the 10th term?

What is un = 2 * 4(n-1) u10 = 524,288

500
Find the missing terms in the following geometric sequence. 4, ___ , _____, _____, 324
What is 12, 36, 108?
500
This is the value of the 10th term when the 2nd term is 6 and the 3rd term is 18.
What is 39366
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