What is 0.45 as a Fraction?

If you’re wondering what 0.45 is as a fraction, you’re in luck. We’ve got the answer, along with a handy explanation of how to arrive at it.

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When we talk about fractions, we usually think of numbers like 1/2, 3/4, or 5/8. These fractions have a numerator (the top number) that is less than the denominator (the bottom number). For example, in the fraction 3/4, the numerator is 3 and the denominator is 4.

But what about a fraction like 0.45? This number doesn’t look like it has a numerator and a denominator. In fact, it looks like a decimal (a number with a decimal point). So what is 0.45 as a fraction?

It turns out that 0.45 can be written as a fraction, but it is not a “proper” fraction. A proper fraction is one where the numerator is less than the denominator. In other words, it is a fraction where the top number is less than the bottom number. But 0.45 is not a proper fraction because its numerator (4) is greater than its denominator (5).

0.45 can be written as a fraction in two ways: 4/5 or 8/10. Both of these fractions are proper fractions because their numerators (4 and 8) are less than their denominators (5 and 10).

0.45 can also be written as a mixed number: 1 4/5 or 0 8/10 . A mixed number is a combination of a whole number and a proper fraction. In other words, it is a whole number plus a proper fraction.

So, to answer the question “what is 0.45 as a fraction?”, we can say that it can be written as either 4/5, 8/10, or 1 4/5 .

What is 0.45 as a Fraction?

The number 0.45 can be written as a fraction in a few different ways. The easiest way to write 0.45 as a fraction is to use the decimal to fraction converter.

Decimals and fractions

When we talk about “0.45” as a fraction, we are really talking about 45 hundredths. So, to write this fraction in its simplest form, we need to divide both the numerator (45) and denominator (100) by 5:

Now, let’s look at an example involving a mixed number. Suppose someone gave you 4 and a half candy bars and you wanted to divide them equally among 5 friends. You would end up with 0.9 candy bars per friend (4.5 ÷ 5 = 0.9).

It can be helpful to think of fractions as parts of a whole. So, in the example above, we could think of the 4.5 candy bars as 4 candy bars plus 1/2 of a candy bar:

This is why the answer is 0.9 and not just 0.4 (4 ÷ 5 = 0.8).

Convert 0.45 to a fraction

To convert a decimal to a fraction, place the decimal number over its place value. So, 0.45 would be 45 over 100. To reduce this fraction, divide both the numerator and denominator by 5 to get 9 over 20.

0.45 as a percentage

0.45 as a percentage is 45%.


To conclude, 0.45 as a fraction is 9/20.