Integers Packet (Thanks Laura Benns!).pdf

# Subtracting positives is the same as adding negatives

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Subtracting positives is the same as adding negatives. PARTY #2: This is a negative party. It is filled with negative people. What could you do to make this party less negative (more positive)? One option would be to make some of the negative people go home. This means you are subtracting negative people. A second option would be to bring in some positive people. This means you are adding positive people. Therefore you have accomplished the same thing two different ways. Subtracting negatives is the same as adding positives.

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Created by Lance Mangham, 6 th grade teacher, Carroll ISD Activity 3-9: Subtraction of Integers on a Number Line Name: 1. 7 – 2 -10 -5 0 5 10 2. 4 – 6 -10 -5 0 5 10 3. 6 1 - - - -10 -5 0 5 10 4. 5 3 - - -10 -5 0 5 10 5. 3 4 - - -10 -5 0 5 10 6. 2 5 - - - -10 -5 0 5 10
Created by Lance Mangham, 6 th grade teacher, Carroll ISD Activity 3-10: Subtraction of Integers with Models Name: 1. Which expression is represented by the model below? A. 7 3 - - B. 7 7 - - C. 7 ( 3) - - - D. 7 ( 10) - - - 2. Model the following expressions by drawing number lines below. A. 4 ( 2) - - - B. 5 ( 3) - - C. 2 8 - - D. 4 6 ( 3) - - - - 3. Model the following expressions by drawing two-color counters below. A. 4 ( 2) - - - B. 5 ( 3) - - C. 2 8 - - D. 4 6 ( 3) - - - - 0 -7 3

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Created by Lance Mangham, 6 th grade teacher, Carroll ISD Activity 3-11: Integer Word Problems Name: Write the expression for each word problem and then solve. 1. Jerry Jones has overdrawn his account by \$15. There is \$10 service charge for an overdrawn account. If he deposits \$60, what is his new balance? 2. The outside temperature at noon was 9 degrees Fahrenheit. The temperature dropped 15 degrees during the afternoon. What was the new temperature? 3. The temperature was 10 degrees below zero and dropped 24 degrees. What is the new temperature? 4. The football team lost 4 yards on one play and gained 9 yards on the next play. What is the total change in yards? 5. The temperature in Tahiti is 27 degrees Celsius. The temperature in Siberia is 33 - degrees Celsius. What is the difference in temperatures? 6. Horatio Hornswoggle was born in 57 B.C. and died in 16 A.D. How old was Horatio when he died? 7. You have a bank account balance of \$357 and then write a check for \$486. What is your new balance? 8. A mountain climber is at an altitude of 4572 meters and, at the same time, a submarine commander is at 609 - meters. What is the difference in altitudes? 9. The Roman Empire was established in 509 B.C. and fell 985 years later. In what year did the Empire fall? 10. A scuba diver is at an altitude of 12 - meters and a shark is at an altitude of 31 - meters. What is the difference in altitudes? 11. A submarine descended 32 feet below the surface of the ocean. It then rose 15 feet to look at a shark. Write an expression and solve to find the submarines current depth. 12. In January, the temperature at Mt. Everest averages 36 C - ° . It can drop as low as 60 C - ° . In July, the average summit temperature is 17 degrees Celsius warmer. What is the average temperature at the summit of Mt. Everest in July?
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