What is 84.2 as a Fraction?
Learn how to convert 84.2 to a fraction with step-by-step instructions
Quick Answer
84.2 as a fraction is:
421/5
This is the simplest form of the fraction
84.2 Decimal to Fraction Calculator
Convert Any Decimal to a Fraction
Enter a decimal number to see its fraction equivalent
How to Convert 84.2 to a Fraction
General Method: Converting Decimals to Fractions
Follow these steps to convert any decimal to a fraction
Step 1: Count Decimal Places
Count the number of digits after the decimal point
Example: 0.25 has 2 decimal places
Step 2: Multiply by Power of 10
Multiply by 10 raised to the number of decimal places
0.25 × 100 = 25
Step 3: Create Fraction
Use the result as numerator over the multiplier as denominator
25/100
Step 4: Simplify
Reduce the fraction if possible by dividing both numbers by their GCD
25/100 = 1/4
Converting 84.2 to a Fraction
Let's apply the method to convert 84.2
Count the decimal places in 84.2
Multiply by 10 (10)
Write as a fraction
Simplify the fraction
Final Result
84.2 = 421/5
Tips and Notes
- The denominator will always be a power of 10 for terminating decimals
- Each decimal place corresponds to multiplying by 10 (e.g., 1 places = 10)
- Very small decimals like 84.2 often result in fractions with large denominators
Related Decimal to Fraction Conversions
Decimal | Fraction | Comparison |
---|---|---|
8.42 | 42.1/5 | Smaller |
84.2 | 421/5 | Current Value |
842 | 4210/5 | Larger |
8420 | 42100/5 | Larger |
84200 | 421000/5 | Larger |
Additional Information
Scientific Notation
84.2 can be written as 421 × 10⁻1 in scientific notation
Percentage
84.2 is equal to 8420.000% as a percentage
Common Calculations with 84.2
Quick Reference Guide
Common calculations and conversions with 84.2
Multiplication
- 84.2 × 10 = 842
- 84.2 × 100 = 8420
- 84.2 × 1000 = 84200
- 84.2 × 10000 = 842000
- 84.2 × 5 = 421
Division
- 84.2 ÷ 2 = 42.1
- 84.2 ÷ 5 = 16.84
- 84.2 ÷ 10 = 8.42
- 84.2 ÷ 1/84.2 = 5
84.2 in Different Number Systems
Decimal
84.2
Scientific Notation
421 × 10⁻1
Percentage
8420.000%
Fraction
421/5
Parts Per Million
84200000 PPM
Binary
0.0010
Real-World Applications of 84.2
Where You Might Encounter 84.2
Scientific Applications
- • Microscopic measurements (84200000 micrometers)
- • Chemical concentrations
- • Statistical probability calculations
- • Error margins in precise measurements
Engineering
- • Manufacturing tolerances
- • Electronic component specifications
- • Quality control measurements
- • Precision engineering