Integers Review

Which real-life scenario creates a net sum of 1?

• Annette bakes 4 pies for the school bake sale. 3 of Annette's pies are sold at the bake sale.

• Bruce made 2 wooden tables last week. He made 3 wooden tables this week.

• The temperature rose 10 degrees throughout the day. Then, it dropped 11 degrees at night.

• While driving his car to work, Brad used 6 gallons of gas. At the end of the day, Brad went to the gas station and put 5 gallons of gas in his car.

Which real-life scenario creates a net sum of 3?

• Over the last week, Samantha noticed that her pool water level dropped 8 inches. Samantha ran some water in the pool and the water level rose 3 inches.

• This morning, Bob's Bakery baked 24 blueberry muffins. By the end of the day, 19 blueberry muffins were sold.

• Last night, the temperature dropped 18 degrees. When the sun came up, the temperature rose 15 degrees.

• At the start of work, Janette walked up 6 flights of stairs to her office. At break time, she walked down 3 flights of stairs to the vending machine.

Which real-life scenario creates a net sum of -1?

• Before the lunch rush, Henry's Hot Dogs grilled 36 hot dogs. During the lunch rush, they sold 33 hot dogs.

• Yesterday, Bennett planted 8 new flowers in his flower garden. Today, he planted 7 flowers in his flower garden.

• Last night, the temperature dropped 13 degrees. When the sun came up, the temperature rose 12 degrees.

• Yesterday, a car dealership received a shipment of 5 new cars. Today, the car dealership sold 4 cars.

Determine if the following argument always applies, sometimes applies, or never applies.

The sum of two negative numbers is negative.

• Always

• Sometimes

• Never

Determine if the following argument always applies, sometimes applies, or never applies.

The product of two positive numbers is negative.

• Always

• Sometimes

• Never

Determine if the following argument always applies, sometimes applies, or never applies.

The opposite of an integer is negative.

• Always

• Sometimes

• Never

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