What is 15.55 as a Fraction?

Learn how to convert 15.55 to a fraction with step-by-step instructions

Quick Answer

15.55 as a fraction is:

311/20

This is the simplest form of the fraction

15.55 Decimal to Fraction Calculator

Convert Any Decimal to a Fraction

Enter a decimal number to see its fraction equivalent

How to Convert 15.55 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 15.55 to a Fraction

Let's apply the method to convert 15.55

1

Count the decimal places in 15.55

15.55
There are 2 digits after the decimal point
2

Multiply by 10 (100)

15.55 × 100 = 1555
Moving the decimal point 2 places right
3

Write as a fraction

1555/100
Numerator: 1555, Denominator: 100
4

Simplify the fraction

1555/100 = 311/20
Divide both numbers by their greatest common factor (5)

Final Result

15.55 = 311/20

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., 2 places = 100)
  • Very small decimals like 15.55 often result in fractions with large denominators
DecimalFractionComparison
1.55531.1/20Smaller
15.55311/20Current Value
155.53110/20Larger
155531100/20Larger
15550311000/20Larger

Additional Information

Scientific Notation

15.55 can be written as 311 × 10⁻2 in scientific notation

Percentage

15.55 is equal to 1555.000% as a percentage

Common Calculations with 15.55

Quick Reference Guide

Common calculations and conversions with 15.55

Multiplication

  • 15.55 × 10 = 155.5
  • 15.55 × 100 = 1555
  • 15.55 × 1000 = 15550
  • 15.55 × 10000 = 155500
  • 15.55 × 20 = 311

Division

  • 15.55 ÷ 2 = 7.775
  • 15.55 ÷ 5 = 3.1100000000000003
  • 15.55 ÷ 10 = 1.5550000000000002
  • 15.55 ÷ 1/15.55 = 20

15.55 in Different Number Systems

Decimal

15.55

Scientific Notation

311 × 10⁻2

Percentage

1555.000%

Fraction

311/20

Parts Per Million

15550000 PPM

Binary

0.0101 0101

Real-World Applications of 15.55

Where You Might Encounter 15.55

Scientific Applications

  • • Microscopic measurements (15550000 micrometers)
  • • Chemical concentrations
  • • Statistical probability calculations
  • • Error margins in precise measurements

Engineering

  • • Manufacturing tolerances
  • • Electronic component specifications
  • • Quality control measurements
  • • Precision engineering