3rd Quarter Review #2 7th Grade Math 1) 7 1 12 6 2) 16 h 43 81 3) 2 x (9 x 4) Name: _________________ 4) 45 5) A scientist is mixing a chemical solution for an experiment. The solution 3 ounce of 8 1 chemical and ounce 6 contains saline solution. What is the unit rate of chemical to saline solution? 6) 4 12 9 7) d 10 8 3 8) On a scale drawing, a bookshelf is 8 inches tall. The scale factor is 1:8. What is the actual height of the bookshelf? 9) Write 5 as a decimal. 6 10) A ball is dropped from a height of 48 feet. Each time the ball bounces, it travels back up half the distance from which it fell. How many total feet has the ball traveled when it hits the ground for the fifth time? 11) 5( x 3) 10 x 14 12) 5 1 5 6 3 6 13) Write 75% as a fraction 14) A cereal box contains and decimal. 1 8 cups of cereal. The 15) 4x 17 5x 12 4 nutritional information on the box defines a serving as Fraction: ____________ 3 a cup. How many 4 servings does this box contain? Decimal: ____________ 16) 5 (4) 17) A 9-foot street sign casts a 12-foot shadow. The lamppost next to it casts a 24-foot shadow. How tall is the lamppost? 18) 7d 20 3d 8 19) The energy consumption of an appliance is measured in kilowatt-hours (kWh) and is the product of kilowatts per hour the appliance uses and the number of hours it uses energy. The Soto family’s 1 clothes dryer uses 2 2 kilowatts per hour. If Mr. Soto runs the clothes dryer for 3 hour, how much energy will 4 it use? 20) Samantha has a rectangular garden with dimensions 14 in and 12 in. She wants to increase the garden by a scale factor of 2. Find the area and perimeter of her new garden. Area = __________ Perimeter = ___________