The fraction .125, often encountered in various scientific, engineering, and mathematical fields, stands for 125 parts of a thousand. It is a decimal fraction equivalent to 1/8, with each part representing 12.5%. This article aims to provide a comprehensive understanding of the .125 fraction, its applications, and practical strategies for working with it.
Definition:
The .125 fraction represents 1 part per 8 or 125 parts per 1000. It is written as 0.125 in decimal form and is often abbreviated as .125.
Equivalent Fractions:
The .125 fraction finds numerous applications across various disciplines:
Engineering:
Finance:
Chemistry:
Medicine:
Table 1: .125 Fraction Equivalents
Fraction | Decimal | Percentage |
---|---|---|
.125 | 0.125 | 12.5% |
1/8 | 0.125 | 12.5% |
5/40 | 0.125 | 12.5% |
Table 2: Decimal to Fraction Conversion
Decimal | Fraction |
---|---|
0.125 | 1/8 |
0.250 | 1/4 |
0.500 | 1/2 |
Table 3: Fraction to Decimal Conversion
Fraction | Decimal |
---|---|
1/8 | 0.125 |
1/4 | 0.250 |
1/2 | 0.500 |
Multiplication and Division:
Converting to Fractions:
Adding and Subtracting:
Example:
Convert 0.125 to a fraction:
0.125 * 100 = 12.5
12.5 is equivalent to 125/100, which can be simplified to 1/8.
Step 1: Understand the Concept
Step 2: Convert to Fraction or Decimal
Step 3: Perform Calculations
Step 4: Interpret Results
Story 1:
A mechanical engineer designing a gear system needs to ensure a precise clearance of 0.125 inches between two gears. By understanding that .125 represents 1/8, the engineer can easily calculate the required number of teeth on each gear to achieve the desired clearance.
Lesson: The .125 fraction allows for accurate and efficient calculation of clearances and tolerances in engineering applications.
Story 2:
A medical researcher conducting a clinical trial needs to determine the dosage of a medication for patients with a certain condition. The recommended dosage is 125 mg per kilogram of body weight. Recognizing that .125 is equivalent to 1/8, the researcher can quickly calculate the appropriate dosage for each patient based on their weight.
Lesson: The .125 fraction simplifies medication dosage calculations, ensuring accurate and individualized treatment for patients.
Story 3:
A financial analyst wants to calculate the interest earned on an investment. The interest rate is given as 12.5%. By interpreting .125 as 12.5%, the analyst can easily determine the amount of interest accrued over a specific period.
Lesson: The .125 fraction facilitates quick and precise calculations of interest rates and other financial metrics.
1. What is the decimal equivalent of .125?
Answer: 0.125
2. How do I convert .125 to a fraction?
Answer: Multiply by 100 to get the numerator, making the denominator 100. Simplify the fraction to its lowest terms.
3. How do I perform multiplication with the .125 fraction?
Answer: Multiply by 1/8 or divide by 8.
4. What is the significance of .125 in engineering?
Answer: It represents clearances, tolerances, and other critical dimensions.
5. Why is .125 used in medicine?
Answer: It helps determine accurate drug dosages based on patient weight.
6. How is .125 useful in financial calculations?
Answer: It simplifies interest rate calculations and other financial computations.
7. What are the applications of .125 in chemistry?
Answer: It represents concentration of solutions and aids in stoichiometric calculations.
8. Is .125 the same as 1/5?
Answer: No, .125 is equivalent to 1/8.
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