Vocab
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Lesson 7-4
Lesson 7-4
inverse operations
regroup
130
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5 + 3 = 8
8 - 3 = 5
Ideas for Use
To use place value to exchange equal
amounts when renaming a number.
• Use the blank cards to write your own
vocabulary cards.
Operations that undo each other.
The prefix re- can mean “again.” Write two
other math words that use the prefix re-.
Inverse can mean “opposite.” How can this
help you remember the meaning of inverse
operations ?
Sample answers: rename; rewrite
Sample answer: I know addition
and subtraction are opposites.
Copyright © The McGraw-Hill Companies, Inc.
• Write a tally mark on each card every time
you read the word in this chapter or use it
in your writing. Challenge yourself to use at
least 10 tally marks for each word card.