Scale Drawings and Scale Factors in 7th Grade Math

What does a scale of 4 in = 1 in imply in an advertisement?

• The ad is the same size as the actual object.

• The ad size is unrelated to the actual object.

• The ad is four times smaller than the actual size.

• The ad is four times larger than the actual object.

How do you solve for the size of an object in an advertisement using proportions?

• Add the scale factor to the real size.

• Divide the real size by the scale factor.

• Multiply the real size by the scale factor.

• Set up a proportion and use cross multiplication.

In the iPod advertisement example, if the actual iPod is 3 inches, how tall will the iPod be in the advertisement?

• 3 inches

• 12 inches

• 4 inches

• 1 inch

What does it mean to set up a proportion in the context of scale problems?

• To multiply across a grid

• To divide two numbers

• To subtract measurements

• To create an equation that equates two ratios

If 1 unit on a grid represents 2 feet in reality, how many feet do 7 units represent?

• 14 feet

• 3.5 feet

• 28 feet

• 10 feet

What is a scale factor?

• A method to increase the size of an object.

• A ratio that represents how dimensions in a model relate to real-life dimensions.

• A tool used exclusively in architecture.

• A fixed measurement on maps.

If a scale factor is used to make a reduction, what kind of number is it?

• An irrational number

• A negative number

• A fraction less than one

• A whole number greater than one

What is the purpose of converting all measurements to the same unit when calculating scale factors?

• To simplify the calculation

• To ensure accuracy in the proportion

• All of the above

• To comply with mathematical rules

How do you determine the actual distance on a map if 1 cm represents 24 miles and the measured distance is 4 cm?

• 6 miles

• 120 miles

• 48 miles

• 96 miles

What would be the scale factor if converting from feet to inches for a model that uses a scale of 1 inch to 6 feet?

• 1 to 12

• 1 to 6

• 1 to 72

• 1 to 36