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Name _______________________________________ Date __________________ Class __________________ LESSON 2-5 Practice A Solving Equations Containing Integers Solve each equation. Check your answer. 1. n 6 2 2. x 8 11 _______________________ 4. y 4 2 ________________________ 5. c 7 3 _______________________ 7. 8j 16 m 5 2 _______________________ 13. p 8 6 _______________________ 16. n 4 6 _______________________ 19. 6x 36 _______________________ ________________________ 6. 0 v 1 ________________________ 8. 3k 24 _______________________ 10. 3. 7 a 5 ________________________ 9. 20 4s ________________________ 11. d 3 6 ________________________ r 4 7 12. ________________________ 14. 15 5b ________________________ 17. k 10 3 ________________________ 20. 2 e 7 ________________________ ________________________ 15. f 9 1 ________________________ 18. 4a 16 ________________________ 21. 3 m 2 ________________________ 22. The temperature in Minnesota was 8 °F one day. This was 12 degrees less than the temperature in Indiana on the same day. What was the temperature in Indiana? ________________________________________________________________________________________ 23. Mr. Harding sold 100 shares of stock at $14 per share. He had a loss of $6 per share. What did Mr. Harding pay for each share of the stock? ________________________________________________________________________________________ Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. 37 Holt McDougal Mathematics Name _______________________________________ Date __________________ Class __________________ LESSON 2-5 Practice B Solving Equations Containing Integers Solve each equation. Check your answer. 1. y 5 4 2. n 9 14 _______________________ 4. p 18 14 ________________________ 5. q 6 2 _______________________ 7. 9h 36 d 7 5 8. 3b 36 11. _______________________ ________________________ 9. 100 4u ________________________ 17. 14 m 10 ________________________ 20. ________________________ 12. 14. 75 3v _______________________ 19. x 15 31 c 20 4 ________________________ _______________________ 16. 63 9s 6. 0 w 4 ________________________ _______________________ 13. f 15 16 ________________________ ________________________ _______________________ 10. 3. 13 x 15 e 8 7 s 9 9 ________________________ 15. g 19 21 ________________________ 18. 12 w 4 ________________________ 21. 6 21 n ________________________ ________________________ 22. The temperature in Buffalo, New York, was 2 °F one day. This was 42 degrees warmer than the temperature in Nome, Alaska, on the same day. What was the temperature in Nome? ________________________________________________________________________________________ 23. LaSanda bought 20 shares of stock for $175. She sold the stock for a total profit of $25. What was the selling price of each share of stock? Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. 39 Holt McDougal Mathematics Name _______________________________________ Date __________________ Class __________________ LESSON 2-5 Problem Solving Solving Equations Containing Integers Write the correct answer. 1. Jolene has 30 days to prepare for a bicycle race. She will bicycle 15 miles each day. How many miles will Jolene have bicycled during her training? 2. When the amount of money spent is greater than the amount of income, it is called a deficit. In 2002, the U.S. budget deficit was $158 billion. By 2004, it was $412 billion. How much did the deficit go up during those two years? _______________________________________ ________________________________________ 3. Two angles of a triangle have a sum of 110°. The sum of all three angles is 180°. What is the measure of the third angle? 4. The Statue of Liberty was erected in New York City in 1886. How old is the statue? _______________________________________ ________________________________________ _______________________________________ ________________________________________ Choose the letter for the best answer. 5. Lonnie swam 3 miles each day for 45 days. How many miles did Lonnie swim? 6. On the hottest day in Richmond, Virginia, the temperature was 105 °F. On the coldest day, the temperature was 117 °F lower. What was the coldest temperature in Richmond? A 135 miles B 48 miles C 125 miles F 117 °F D 45 miles G 12 °F H 12 °F J 117 °F 7. Mr. Marco sold 50 shares of Gizmo stock for $1,250. What was the selling price of the stock per share? 8. The U.S. Bullion Depository at Fort Knox contains about 147 million troy ounces of gold. At a market price of $400 per troy ounce, what is the approximate value of the gold stored at Fort Knox? A $1,200 B $250 C $50 D $25 F $6 billion G $60 billion H $560 million J $560 billion Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. 44 Holt McDougal Mathematics LESSON 2-5 Puzzles, Twisters & Teasers A Bold Conclusion! Solve each equation. Then use the boldfaced letters to answer the riddle. Q 9y 900 _____________________________ A d 15 45 _____________________________ U j 56 7 _____________________________ C v 39 16 _____________________________ F w 41 0 _____________________________ K 85 5c _____________________________ X 11y 121 _____________________________ E 23 x 35 _____________________________ O 200 25p _____________________________ R 20 2z _____________________________ B a 25 5 _____________________________ S s 2 4 _____________________________ W 5a 300 _____________________________ D k 18 11 _____________________________ G b 7 16 _____________________________ What do you call ten ducks in a cardboard box? _____ _____ _____ _____ _____ _____ 60 20 8 11 8 41 _____ _____ _____ _____ _____ _____ _____ _____ 100 63 60 23 17 58 10 6 Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. 109 Holt McDougal Mathematics