1. © 2015 by Vista Higher Learning, Inc. All rights reserved.

2. Note that 81 and 91 are exceptions:
Numbers that end in the digit 1 are not usually hyphenated. They use the conjunction et instead.
Note that 81 and 91 are exceptions:
The number quatre-vingts ends in -s, but there is no -s when it is followed by another number.
© 2015 by Vista Higher Learning, Inc. All rights reserved.

3. Essayez! What are these numbers in French?
soixante-sept
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© 2015 by Vista Higher Learning, Inc. All rights reserved.