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### Course: 5th grade (2018 edition)>Unit 1

Lesson 1: Common fractions and decimals

# Common fractions and decimals

Build intuition behind memorizing the decimal form of common fractions like that 1/2 equals 0.5 or 3/4 equals 0.75.
Some fractions are so common that it's worth memorizing the decimal form. Here are a few of the most common fractions and their decimal forms:
Sweet. Now that we know these three common fractions, let's use them to convert other fractions to decimals and decimals to fractions.

## Practice 1: Converting from fractions to decimals

Convert the following fractions to decimals. Don't use a calculator! The goal is to be able to figure these out quickly in your head.
$\frac{1}{2}=$

$\frac{1}{4}=$

$\frac{2}{4}=$

$\frac{3}{4}=$

$\frac{1}{5}=$

$\frac{2}{5}=$

$\frac{3}{5}=$

$\frac{4}{5}=$

## Practice 2: Converting from decimals to fractions

Convert the following decimals to fractions. Just like in the last section, please try to do these in your head.
$0.2=$

$0.25=$

$0.4=$

$0.5=$

$0.6=$

$0.75=$

$0.8=$