SCALED DRAWINGS
Every length in the original figure is multiplied by the same number.
What is a scaled copy?
The values for one quantity are each multiplied by the same number to get the value for the other quantity.
What is a proportional relationship?
The distance ALL the across the circle or d=2r
What is diameter?
The decimal equivalent of 0.5%.
What is 0.005?
The final elevation, in feet, of a diver who starts at 15 feet below sea level and descends another 20 feet.
What is -35 feet? (Accept "35 feet below sea level")
The number you multiply all sides by to make a scaled copy.
What is a scale factor?
The number of lemons needed if a recipe requires 3 cups of water for every 2 lemons, and you are using 12 cups of water.
What is 8?
The distance halfway across the circle r=1/2d
What is radius?
The total amount of a restaurant bill, in dollars, if the food costs $40 and you leave a 15% tip.
What is $46?
The value of the expression -4.5 - (-6.2).
What is 1.7?
When part of the original figure matches up with part of a copy. These could be points, segments, angles or distances. (Think of it as the same spot in the new shape)
What is a corresponding part?
The unit rate, and the exact point on a coordinate graph that represents it, if a proportional line for ticket sales passes through (4, 44).
What are $11 per ticket and the point (1, 11)?
The distance around the circle or C=pid
What is circumference?
The original price of a jacket, in dollars, if it is on sale for 20% off and the sale price is $48.
What is 60$?
The value of the expression(-2/3) X (-5/8) written in simplest form.
What is 5/12?
Making the numerator the denominator and the denominator the numeratior---or dividing a number by 1
What is the reciprocal?
The equation representing the total money earned, m, for recycling c cans, if a recycling center pays $0.05 per aluminum can.
What is m = 0.05c? or m =1/20c
The circumference of a circular pizza whose total area is 49(3.14) square inches. (Note: You can tell students they can leave their answer in terms of pi!)
What is 14 (3.14 ) inches? (Accept roughly 43.96 inches if they multiply by 3.14)
The percent error if a student estimates that a hallway is 80 feet long, but its actual measurement is 100 feet.
What is 20%?
The average change in temperature per hour, in degrees, if the temperature drops a total of 24 degrees celsius over a 6-hour period.
What is -4 per hour? (Accept "a drop of 4 degrees celsius per hour")
A blueprint of a rectangular community pool uses a scale where 2 centimeters represents 5 meters. On the blueprint, the pool is 6 centimeters long and 4 centimeters wide. What is the actual area of the pool in square meters?
150 square meters
The total distance, in miles, a person can walk in 2 1/2 hours if they maintain a constant speed of 3/4 of a mile every 1/2 hour.
What is 3 3/4 miles or 3.75 miles?
All the space inside the circle or A=r2pi
What is area of a circle?
The final price of an item that originally costs $100, is marked down by 30% and then has a 10% sales tax applied to the sale price.
What is $77?
The value of the expression -5 X (-3 + 7) - 12 / (-3).
What is -16?