This worksheet defines the terms "BC" (before Christ) and "AD" (anno Domini) and briefly explains how they are used. "CE" (common era) and BCE (before common era) are also explained. I use this worksheet with my sixth grade class when we start to learn about world history.
There are ten historical BC events on the worksheet. Students are to calculate how long ago each of the events occurred.
An answer key is provided, with calculations using 2017 as the current year.
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