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UNIT 1
 
 
 
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CHAPTER 1 Add and Subtract Decimals
  
What Do I Need to Know?  
Sports - bobsled racers

Jill Bakken and Vonetta Flowers won the gold medal in the women's bobsled race at the 2002 Winter Olympics with a two-run time of 1 minute 37.76 seconds. How would you say their time in words?

VOCABULARY  
place
value
standard form
expanded form
whole number
decimal
equivalent decimals
inverse operations

What Will I Learn?  
In this chapter you will learn to
understand, compare, and order whole numbers and decimals.
add and subtract whole numbers and decimals.
round numbers to a given place.
estimate sums and differences.
use skills and strategies to solve problems.

How Do I Read Math?  
When you read a mathematics book, sometimes you read words and symbols and sometimes you read only symbols.

All of these represent 2.3 minus 1.6:
1.6 less than 2.3
2.3–1.6

  
Use your Foldables to help you with chapter concepts.

1. Fold a sheet of 11-by-17 inch paper like a shutterfold.
2. Staple five sheets of notebook paper inside the shutterfold, and label each with a lesson title.
3.Write "DECIMALS" on the front of the Foldables, and record what you learn inside as shown.

  
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