Prefixes: Numbers 10 through One Billion
Prefixes: Numbers 10 through One Billion
How do you know how long a decade is? How about a millennium? You can tell by looking at the prefixes in the words.
A prefix is a word or group of letters that comes at the beginning of a word and hints at it's meaning. Sometimes prefixes can also represent numbers.
Prefixes are how you know a unicycle has one wheel, a bicycle has two wheels, and a tricycle has three wheels. They're also how you can tell a difference between a decade and the millennium.
The practice questions and video below will introduce you to some common prefixes to represent the numbers 10; 100; 1,000; 1,000,000; and 1,000,000,000.
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