advertisement

Math 8 Assignment – Unit 2 - Integers Name: ________________________ Due date: ___________ Total No Calculators are permitted for this unit! Section A: Place the letter of the best choice in the space at the left. ____1. Evaluate: [10 points] (+8) x (-5) A. -13 B. -40 C. 40 D. 13 ____2. Which product has a value of +36? A. (-3) x (+12) B. (+6) x (-6) C. (-6) x (-6) D. (+12) x (-3) ____3. What is (-24) ÷ (-3)? A. -72 B. -8 C. +8 D. +72 ____4. What is the missing integer in (-7) x ___ = (+56) A. -8 B. -6 C. +6 D. +8 C. (-14) x (+65) D. (+9) x (-89) C. (-8) x (-8) D. (+20) x (-4) ____5. Which product results in a positive answer? A. 46 x (-2) B. (-9) x (-11) ____6. Which has the greatest product? A. (-9) x (+8) B. (+5) x (+12) ____7. Which diagram represents (-6) ÷ (+2) = (-3) [shaded are negative and not shaded are positive] ____8. Which statement is FALSE? A. A positive divided by a negative is a negative. B. A negative divided by a negative is a negative. C. A negative divided by a positive is a negative. D. A positive times a negative is a negative. ___9. The temperature in Iqaluit dropped 4 degrees each day. The total drop was 24 degrees. Which equation can be used to represent finding the number of days the temperature was dropping? A. (+24) ÷ (-4) B. (+24) ÷ (+4) C. (-24) ÷ (-4) D. (-24) ÷ (+4) /50 _____10. Which situation could be represented by the multiplication problem 15 3 ? A. B. C. D. Michael gave away $15 to each of his three friends. Michael received $15 from each of his three friends. Michael gave away a total of $15 to his friends. Michael received a total of $15 from each of his three friends. ______11. Which operation must be performed first? A. B. C. D. Section B: (+4) x (-1) (-1) - (+7) (+7) +(-6) (-6) (+2) Place the answer for each item in the space provided. Show all workings. 1. Model each using the method of your choice and find the solution. A. (+4) x (-3) B. (-5) x (-2) C. (+18) ÷ (+6) D. (-8) ÷ (+4) 2. Complete the following using your rules. A. (-5) x (-11) = B. (-10) x (+12) = C. ________ [12 points] [10 points] F. (-80) ÷ (-20) = ________ G. (+54) ÷ (+9) =________ (+63) ÷ (-7) = ________ H. (+5) x (+4) = D. (-48) ÷ (+6) = ________ I. (+12) x (-12) = ________ E. (+6) + (-14) = ________ J. (-12) – (-8) = ________ ________ ________ 3. Use the area model to calculate: 4. Use order of operations to solve each of the following. A. 5. (-23) x (+34) [3 points] [6 points] B. A student made an error when calculating the answer to this question. Explain where the student made the error, then solve the question correctly. [3 points] (-4) + (-3) x (-2) = (-7) x (-2) = +14 6. Brandon lost 4 points in each hand of cards he played. He played 3 hands of cards. Write this problems as multiplication expression using integers and solve the problem. [2 points] 7. The product of two integers is -48 and the quotient of the same two integers is -3. What are the two integers? Explain how you know. [3 points]