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Math help from the Learning Centre

This guide provides useful resources for a wide variety of math topics. It is targeted at students enrolled in a math course or any other Centennial course that requires math knowledge and skills.

Place Value

The decimal number system is a base 10 system, so the digits of each place can be any number from 0 to 9. Each place value has a name.

For large numbers, digits are separated by commas or spaces into groups of three, called periods. For example,

\[12,340,982\qquad 320\,432\,196\]


1. Name the following number: \(384,341\)


Three hundred eighty-four thousand, three hundred forty-one.


2. Write out the following number: Twelve million, thirty-eight thousand, two



Note there is no and separating periods. The word and is reserved for decimal place values after the ones column.


3. What place value is underlined for the following numbers:

a. \(820,3\underline{3}0,020\) - ten thousands

b. \(\underline{4}032\) - thousands

c. \(1,402,\underline{4}97\) - hundreds

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Designed by Matthew Cheung. This work is licensed under a Creative Commons Attribution 4.0 International License.
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