Greatest Common Divisor (GCD) of 100 and 160
The greatest common divisor (GCD) of 100 and 160 is 20.
What is the Greatest Common Divisor (GCD)?
The GCD of two integers is the largest positive integer that divides both numbers without leaving a remainder. It is useful in simplifying fractions, finding common factors, and in number theory.
How to Calculate the GCD of 100 and 160?
We use the Euclidean algorithm, which involves the following steps:
- Divide the larger number by the smaller number.
- Replace the larger number with the smaller number and the smaller number with the remainder from the division.
- Repeat this process until the remainder is zero.
- The non-zero remainder just before zero is the GCD.
Step-by-Step Euclidean Algorithm
| Step | Calculation |
|---|---|
| 1 | 100 ÷ 160 = 0 remainder 100 |
| 2 | 160 ÷ 100 = 1 remainder 60 |
| 3 | 100 ÷ 60 = 1 remainder 40 |
| 4 | 60 ÷ 40 = 1 remainder 20 |
| 5 | 40 ÷ 20 = 2 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 90 and 28 | 2 |
| 176 and 181 | 1 |
| 198 and 89 | 1 |
| 124 and 29 | 1 |
| 88 and 23 | 1 |