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Practice - Macmillan/McGraw-Hill

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© <strong>Macmillan</strong>/<strong>McGraw</strong>-<strong>Hill</strong><br />

Name<br />

Prefixes are word parts added to the beginning of other words or<br />

word parts. A prefix changes the word’s meaning. Some prefixes<br />

refer to an amount and are called number prefixes.<br />

prefix number example<br />

uni- 1 unity<br />

bi- 2 bicycle<br />

tri- 3 triceratops<br />

cent- 100 centennial<br />

A. Choose the best prefix for the boldface word. Then write the<br />

complete word on the line.<br />

1. The girl put on her soccer form before the game.<br />

2. Every meter counts when carefully measuring the length of<br />

a board.<br />

3. The cycle has three wheels.<br />

4. Stephanie was lingual and knew two languages.<br />

B. Circle the prefix in each word. Then write a definition of the word<br />

that is based on the meaning of the prefix.<br />

5. triangle tria<br />

6. universe univ<br />

7. bisect bis<br />

8. centipede cent<br />

9. tripod trip<br />

10. unicorn unic<br />

At Home: Write a paragraph containing the fi ve words<br />

with number prefi xes.<br />

Up in the Air • Grade 5/Unit 6<br />

<strong>Practice</strong><br />

Phonics:<br />

Number Prefixes<br />

213

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