Repeated Operations Math Example 3

Follow the full solution, then compare it with the other examples linked below.

Example 3

easy
Start at 50 and subtract 7 repeatedly. Write the first 4 results.

Solution

  1. 1
    Start: 50.
  2. 2
    \(50 - 7 = 43\).
  3. 3
    \(43 - 7 = 36\).
  4. 4
    \(36 - 7 = 29\).

Answer

50, 43, 36, 29
Repeatedly subtracting 7 creates a decreasing arithmetic sequence with a common difference of -7.

About Repeated Operations

Applying the same operation multiple times in succession, where the repetition is often compressed into a higher-level operation: repeated addition becomes multiplication (n⋅an \cdot a), and repeated multiplication becomes exponentiation (ana^n).

Learn more about Repeated Operations →

More Repeated Operations Examples

Example 1 easy

Start at 3 and add 4 repeatedly. Write the first 5 results.

Example 2 medium

Start with 2 and repeatedly double it. What are the first 5 values? What operation are you applying

Example 4 medium

Start with 1 and multiply by 3 repeatedly. What is the 5th value in the sequence?

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