Common Conversions
Scale Factor
Fractions
Constant of Proportionality
Proportions
100

2 feet in inches

What is 24?

100

What type of scale factor enlarges an object?

What is greater than 1?

100

This fraction is 0.25 as a decimal.

What is 1/4?

100

It is abbreviated with this letter.

What is k?

100

Two of these in equality make a proportion.

What is a ratio? (I'll accept fraction, too.)

200

30 millimeters in centimeters

What is 3?

200

What type of scale factor reduces an object?

What is a scale factor less than 1?

200

This fraction is a repeating 6 as a decimal.

What is 2/3?

200

It is equal to this ratio.

What is y/x?

200

The number of students in a class of 50 that like Pokemon, if 4 out of 5 students do.

What is 40?

300

Two and a half hours in minutes.

What is 150?

300

What scale factor makes an object congruent to its image?

What is 1?

300

The product of 1/2 and 4/5

What is 2/5?

300

You find it on a graph at this value for x.

What is 1?

300

The height of a tree with a 75 foot shadow when a 4 foot student has a 3 foot shadow.

What is 100 feet?

400

17 feet in yards.

What is 5 2/3?

400

The scale factor from a 2 unit segment to a 3 unit segment.

What is 1.5?

400

350% as a fraction in simplest form.

What is 7/2?

400

This is the equation for a proportional relationship.

What is y = kx?

400

n, when 3.2/16 = n/50

What is 10?

500

One mile in feet.

What is 5,280?

500

Scalio enlarged a cell phone by a scale factor of 5. This scale factor returns the phone to its original size. 

What is 1/5?

500

This denominator creates a repeating decimal out of the numerator.

What is 9?  (1/9 = .111..., 2/9 = .222...)

500

The constant of proportionality for 4 teaspoons of honey for every 5 cups of flour.

What is 5/4?

500

This attribute is NOT proportional to the side length of a square.

What is area?

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