Meanwhile irrational numbers, such as pi (π) or √2, have an infinite number of decimal places without a periodic pattern, and ...

In every number, each place to the left is 10 times greater and each place to the right is 10 times smaller. The decimal point separates the whole numbers from the parts (or fractions) of a number. An ...

Go to the decimal point. Count along the first 3 numbers to the right. Look at the next number (the 4th number after the decimal place).