Scaling

Multiplying or dividing two related quantities by the same number is called _________

• Ratio

• Scaling

• Equivalent ratios

• Ratio table

A comparison of two quantities by division is a _________

• rate

• ratio

• unit rate

• fraction

The rate for one unit of a given quantity is called a(n) _________

• Unit rate

• Ratio

• Scaling

• Ratio table

Definition: A comparison of two equivalent ratios.

• ratio

• proportion

• scale factor

• unit rate

• rate

The second ratio of this proportion can be obtained from the first ratio by...

• scaling down by dividing by 3, then scaling up by multiplying by 5.

• scaling down by dividing by 5, then scaling up by multiplying by 3.

• scaling down by dividing by 10.

• Answers B, and C.

• None of the above.

The second ratio of this proportion can be obtained from the first ratio by...

• scaling up by multiplying by 10, then scaling down by dividing by 2.

• scaling down by dividing by 2, then scaling up by multiplying by 10.

• scaling up by multiplying by 5.

• Answers A, B, and C.

• None of the above.

True or False: In a scale drawing, all lengths are multiplied by the scale factor.

• True

• In a scale drawing, lengths are not affected by the scale factor.

• In a scale drawing, lengths are divided by the scale factor.

• False

If the scale factor of a drawing is 1:4, and the length of a line in the drawing is 5 cm, what is the actual length of the line?

• 25 cm

• 10 cm

• 20 cm

• 1 cm

What is the scale factor if a drawing of a house is 1 inch:3 feet?

• 1:24

• 1:36

• 1:12

• 1:48

If the scale factor of a drawing is 1:5, and the width of a rectangle in the drawing is 8 cm, what is the actual width of the rectangle?

• 40 cm

• 20 cm

• 12 cm

• 4 cm