To convert the mixed number 3 5 into a decimal, you first need to convert it into an improper fraction. The number 3 can be expressed as a fraction by making it have a denominator of 1, so it becomes 3/1. Next, we convert the whole number part:
3 5 can be rewritten as:
(3 * 5 + 5) / 5 = (15 + 5) / 5 = 20 / 5
Now we calculate the division:
20 ÷ 5 = 4
So, 3 5 as a decimal is 4.00 or simply 4.