4 decades is how many years
Understand the Problem
The question is asking for a conversion of decades into years. Since one decade equals 10 years, four decades would be computed by multiplying 4 by 10.
Answer
$40$
Answer for screen readers
$40$
Steps to Solve
- Identify the conversion factor
To convert decades to years, recognize that 1 decade equals 10 years.
- Set up the multiplication
Multiply the number of decades by the conversion factor. In this case, we have 4 decades, so we will calculate:
$$ 4 \times 10 $$
- Perform the multiplication
Now perform the multiplication:
$$ 4 \times 10 = 40 $$
This gives us the total number of years.
$40$
More Information
This calculation illustrates how to convert decades into years using a simple multiplication factor. It’s a straightforward operation often needed in time-related questions.
Tips
- Forgetting the conversion factor: Sometimes, individuals may forget that 1 decade equals 10 years. Always remember to use this conversion in similar problems.
- Incorrect multiplication: Ensure that you perform the multiplication correctly; mistakes can happen if one is not careful.
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