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Assessment 2 Review Multiplying and Dividing Name________________________ 7NSA2A: I can multiply integers and use multiplication of integers to describe real world context. 1) -3 · -12 =______ 2) 7 · -6 = ______ 3) 8 · -11 = ______ 4) Josh spent $8 on lunch four different times this week. Write and solve an equation to represent this situation using integers. _______________________________________________________ 5) Your bank is running a promotion and will forgive two debts of $15 each. Write and solve an equation to represent the change in money using integers. _____________________________________________________________________________________ 7NSA2B I can divide integers, represent division as multiplication, and use division to describe real world context. 1) 40 ÷ -5 = _____ 2) -72 ÷ -8 = _____ 3) 80 ÷ -4 = _____ 4) Jeffrey’s electricity bill for the year is $1044. If he pays the same amount every month, what is the monthly change in his bank account? Write and solve an equation to represent this situation using integers. ___________________________________________________________________ 5) It took an airplane 40 seconds to drop 800 feet from its current elevation. If the airplane dropped at a constant rate, what is the change in elevation per second? Write and solve an equation to represent this situation using integers. _____________________________________________________________________________________ 7NSA2A I can extend the rules for multiplication of integers to all rational numbers to describe real world context. 1) · = ____ 2) · -3 = ________ 4) Which of the following is equivalent to 3) (3.82)(-2.41) = ________ ? Explain your reasoning. _____________________________________________________________________________________ _____________________________________________________________________________________ 5) Jim owes Mark $15.28. Mark says that he will forgive of the debt. Write and solve an equation to determine how much money Mark forgave, and determine how much Jim still owes. Mark forgave:______________ Jim still owes:_______________ 7NSA2B I can extend the rules for dividing integers to all rational numbers to describe real world context. 1) = _____ 2) ÷ = ________ 3) (-23.04) ÷ (6) = __________ 4) A rental house for the week costs $7,409.10 and six friends are planning to pay for the rent equally. Write and solve an equation that represents the change in money to each friend’s bank account. 7.NS.A.2.C I can apply properties of operations as strategies to multiply and divide rational numbers. Directions: Demonstrate the use of properties while simplifying expressions. 1) 8 · 6 · 2) -7 ÷ 3) · 7 · · -3 · · -10 · -12 · -16 · · Direction: Demonstrate the use of the distributive property and simplify. 4) -4( 5) -5( ) ) Directions: Put the distributed terms back into two term multiplication (undo the distributive property) 6) -3 · 5 + -3 ·