Activity 6: What is missing?
A. Find the missing terms in each arithmetic sequence.
1. 3, 12, 21,
2.
8, 3, -2,
3.
5, 12,
26,
'
4.
2,
20, 29,
5.
4, 10, 16,
6. 17, 14,
5
7.
4,
19, 24, ...
8.
8, 12, 16
9.
-1,
10. 13,
31, 39
-11,-17
B. Find three terms between 2 and 34 of an arithmetic sequence.
Were you able to get the missing terms in each sequence in Part
A? Were you able to get the 3 terms in Part B? Let us discuss a
systematic way of finding missing terms of an arithmetic sequence.
Finding a certain number of terms between two given terms of an
ithmetic sequence is a common task in studying arithmetic sequences. The
ms between any two nonconsecutive terms of an arithmetic sequence are
Own as arithmetic means.
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