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EXAMPLE 1

EXAMPLE 1. Adding and Subtracting Decimals. 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 ?. 1. 0 . 947. a.

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EXAMPLE 1

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  1. EXAMPLE 1 Adding and Subtracting Decimals 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? 1 0 . 947 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 . 046 1 . 993 EXAMPLE 1 Dancing SOLUTION

  2. EXAMPLE 1 Adding and Subtracting Decimals To find how much more was spent in 1998 than in1997, subtract the value for 1997 from the value for 1998. b. 1.138 1.080 1.993 ANSWER In 1998, $0.058billion more was spent than in 1997. EXAMPLE 1 ANSWER In 1995 and 1996, $1.993billion was spent.

  3. 1. – 12.5 + (– 4.55) – 12.50 – 4.55 + – 17.05 for Example 1 GUIDED PRACTICE Find the sum or difference.

  4. 2. 8.93 + 0.367 8.930 0.367 + 9.297 for Example 1 GUIDED PRACTICE Find the sum or difference.

  5. 3. 7.624 + (– 0.05) 7.624 – 0.050 7.574 for Example 1 GUIDED PRACTICE Find the sum or difference.

  6. 4. 8.91 – 2.745 8.910 – 2.745 6.165 for Example 1 GUIDED PRACTICE Find the sum or difference.

  7. 5. – 5.3 – 11.49 – 5.30 – 11.49 – 16.79 for Example 1 GUIDED PRACTICE Find the sum or difference.

  8. 6. 5.376 – (– 0.8) 5.376 0.800 + 6.176 for Example 1 GUIDED PRACTICE Find the sum or difference.

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