What is .3890 as a fraction?

In this article, we will guide you step by step through the process of converting the decimal .3890 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 .3890 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.

.3890 as a fraction equals 3890/10000 or 389/1000

Now let's break down the steps for converting .3890 into a fraction.

Step 1:

First, we express .3890 as a fraction by placing it over 1:
.3890/1

Step 2:

Next, we multiply both the numerator and denominator by 10 for each digit after the decimal point.
.3890 x 10000/1 x 10000
  =  
3890/10000

Step 3:

Next, we find the Greatest Common Factor (GCF) for 3890 and 10000. Keep in mind a factor is just a number that divides into another number without any remainder.
The factors of 3890 are: 1 2 5 10 389 778 1945 3890
The factors of 10000 are: 1 2 4 5 8 10 16 20 25 40 50 80 100 125 200 250 400 500 625 1000 1250 2000 2500 5000 10000
The GCF of 3890 and 10000 is: 10

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 10 in this case.
3890 ÷ 10/10000 ÷ 10
  =  
389/1000


Great Work! We've just determined that .3890 as a fraction equals 3890/10000 or 389/1000 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 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 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 a square root?

The square root of a number is a value when multiplied by itself, gives that number. For example, the square root of 9 is 3 because 3 × 3 = 9.

What is a proportion?

A proportion is an equation that states that two ratios are equal. For example, 1/2 = 2/4 shows a proportional relationship.

What is a terminating decimal?

A terminating decimal is a decimal number that has a finite number of digits after the decimal point. For example, 0.35 and 3.5 are terminating decimals.

What is a fraction as a percentage?

A fraction can be converted to a percentage by dividing the numerator by the denominator and multiplying by 100. For example, 3/6 = 1/2 = 0.50 × 100 = 50%.


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.

Build math skills with Brilliant.org interactive problem solving puzzles designed for adults. Algebra, geometry, logic, and probability are covered with video guides.

For early learners we recommend IXL Math. The math courses range from Pre-K to grade 12.

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



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