What is 0.045 as a fraction?

In this article, we will guide you step by step through the process of converting the decimal 0.045 into a fraction. We will start by understanding how a decimal represents the fractional part of a number, then break down the steps to rewrite 0.045 as a fraction. Finally, we will simplify the fraction by identifying and applying the Greatest Common Factor, ensuring the results are in the simplest form.

By the end of this guide, you should have a good understanding of decimal to fraction conversions and be able to apply this knowledge to various mathematical problems. Let's begin.

0.045 as a fraction equals 45/1000 or 9/200

Now let's break down the steps for converting 0.045 into a fraction.

Step 1:

First, we express 0.045 as a fraction by placing it over 1:
0.045/1

Step 2:

Next, we multiply both the numerator and denominator by 10 for each digit after the decimal point.
0.045 x 1000/1 x 1000
  =  
45/1000

Step 3:

Next, we find the Greatest Common Factor (GCF) for 45 and 1000. Keep in mind a factor is just a number that divides into another number without any remainder.
The factors of 45 are: 1 3 5 9 15 45
The factors of 1000 are: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000
The GCF of 45 and 1000 is: 5

Step 4:

To simplify the fraction, we divide both the numerator and denominator by their greatest common factor (GCF), which we calculated in the previous step. The GCF value is 5 in this case.
45 ÷ 5/1000 ÷ 5
  =  
9/200


Great Work! We've just determined that 0.045 as a fraction equals 45/1000 or 9/200 in its simplest form.

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Frequently asked math questions, including decimals and fractions

Read the following section to help deepen your understanding of basic math concepts.

What are mixed numbers?

A mixed number is made up of a whole number and a proper fraction.

What are proper fractions?

Proper fractions are fractions where the numerator (the top number) is less than the denominator (the bottom number). Example 2/3

What are irrational numbers?

An irrational number is a number that cannot be expressed as a fraction of two integers. Examples include π (pi) and √2 (the square root of 2).

What is a percentage?

A percentage is a number as a fraction of 100. It is denoted using the '%' symbol. For example, 20% means 20 out of 100.

What is a decimal?

A decimal is a number that includes a decimal point, representing a fraction of a whole. For example, 0.5 represents 1/2.

What is an exponent?

An exponent refers to the number of times a number (the base) is multiplied by itself. For example, 2³ means 2 × 2 × 2 = 8.


Educational math links

There are numerous online resources available (some free and some paid) for learning math including decimals and fractions. These range from interactive games to in-depth courses and lessons. We recommend these websites as a valuable resource for students of all skill levels.

For fun game based learning try Prodigy Math.

Desmos.com has a focus on equation, functions and visual graphs.

For a UK based curriculum the BBC.co.uk provides a useful classroom aid to math lessons.



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