SCALES WITHOUT UNITS & UNITS IN SCALE DRAWINGS

SCALES WITHOUT UNITS & UNITS IN SCALE DRAWINGS

Open-Up Unit 1 Lessons 11 & 12

Open Ended

A map of a park says its scale is 1 to 100.

What do you think that means?

Give an example of how this scale could tell us about measurements in the park.

Multiple Choice

There are 2.54 cm in an inch, 12 inches in a foot, and 5,280 feet in a mile. Which expression gives the number of centimeters in a mile? Explain your reasoning.

• A

• B

• C

• D

Open Ended

Andre drew a plan of a courtyard at a scale of 1 to 60. On his drawing, one side of the courtyard is 2.75 inches.

1.What is the actual measurement of that side of the courtyard? Express your answer in inches and then in feet.

2.If Andre made another courtyard scale drawing at a scale of 1 to 12, would this drawing be smaller or larger than the first drawing? Explain your reasoning.

Open Ended

Lin and her brother each created a scale drawing of their backyard, but at different scales. Lin used a scale of 1 inch to 1 foot. Her brother used a scale of 1 inch to 1 yard.

1.Express the scales for the drawings without units.

2.Whose drawing is larger? How many times as large is it? Explain or show your reasoning.