EXAMPLE 1 Adding and Subtracting Decimals Dancing The

EXAMPLE 1 Adding and Subtracting Decimals Dancing The table shows the amounts of money (in billions of dollars) that people in the United States spent on dance studios, schools, and halls. How much was spent in 1995 and 1996? How much more was spent in 1998 than in 1997? SOLUTION a. To find how many billions of dollars were spent in 1995 and 1996, add the values from the table for 1995 and 1996. 1 0. 947 1. 046 1. 993

EXAMPLE 1 Adding and Subtracting Decimals ANSWER In 1995 and 1996, $1. 993 billion was spent. b. To find how much more was spent in 1998 than in 1997, subtract the value for 1997 from the value for 1998. 1. 138 1. 080 1. 993 ANSWER In 1998, $0. 058 billion more was spent than in 1997.

GUIDED PRACTICE for Example 1 Find the sum or difference. 1. – 12. 5 + (– 4. 55) – 12. 50 + – 4. 55 – 17. 05

GUIDED PRACTICE for Example 1 Find the sum or difference. 2. 8. 93 + 0. 367 8. 930 + 0. 367 9. 297

GUIDED PRACTICE for Example 1 Find the sum or difference. 3. 7. 624 + (– 0. 05) 7. 624 – 0. 050 7. 574

GUIDED PRACTICE for Example 1 Find the sum or difference. 4. 8. 91 – 2. 745 8. 910 – 2. 745 6. 165

GUIDED PRACTICE for Example 1 Find the sum or difference. 5. – 5. 3 – 11. 49 – 5. 30 – 11. 49 – 16. 79

GUIDED PRACTICE for Example 1 Find the sum or difference. 6. 5. 376 – (– 0. 8) 5. 376 + 0. 800 6. 176