What is one fifth of 90?

To find one-fifth of 90, you divide 90 by 5. One-fifth means one part out of five equal parts, so it is the same as multiplying by 1/5 (which equals 0.2). In other words, taking one-fifth answers the question: “What is 20% of this number?”This operation is common when you want to split an amount into five equal shares, scale a value down to one-fifth of its size, or compute a 20% portion. Below are the elements of the calculation for one-fifth of 90:

• operation: 90 x 0.2;
• multiplicand: 90;
• multiplier: 0.2;
• operator: x;
• product: 18.