What is 1.80 as a fraction?

In this article, we will guide you step by step through the process of converting the decimal 1.80 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 1.80 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.

1.80 as a fraction equals 180/100 or 9/5

Now let's break down the steps for converting 1.80 into a fraction.

Step 1:

First, we express 1.80 as a fraction by placing it over 1:
1.80/1

Step 2:

Next, we multiply both the numerator and denominator by 10 for each digit after the decimal point.
1.80 x 100/1 x 100
  =  
180/100

Step 3:

Next, we find the Greatest Common Factor (GCF) for 180 and 100. Keep in mind a factor is just a number that divides into another number without any remainder.
The factors of 180 are: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180
The factors of 100 are: 1 2 4 5 10 20 25 50 100
The GCF of 180 and 100 is: 20

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 20 in this case.
180 ÷ 20/100 ÷ 20
  =  
9/5


Great Work! We've just determined that 1.80 as a fraction equals 180/100 or 9/5 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 whole numbers?

Whole numbers are numbers 0, 1, 2, 3, etc. Whole numbers do not have a decimal point or fractional part. Whole numbers are always positive. Negative numbers are not considered whole.

What are rational numbers?

A rational number is any number that can be expressed as the fraction of two integers, such as 3/4, -5/2, or 0.75.

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 an absolute value?

The absolute value of a number is its distance from zero. For example, the absolute value of -20 is 20.

What is a mean (average)?

The mean, or average, is calculated by adding all the numbers in a set and dividing by the total number of values. For example, the mean of 3, 4, and 5 is (3 + 4 + 5)/3 = 4.

What is a percentage as a fraction?

A percentage can be written as a fraction by placing it over 100 and simplifying. For example, 20% = 20/100 = 1/5.


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.

The Art of Problem Solving provides courses tailored for school students including elementary, middle and high school.

Math Planet has customized math courses for high school students.



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