Percent and Scale Factor

If a figure is scaled by a factor of 100%, what is true about the resulting figure.

• The new figure is the same size as the original.

• The new figure is two times larger than the original.

• The new figure is half the size of the original.

• The new figure is 100 times larger than the original.

What does it means if the scale factor is less than 100% (less than 1)?

• The resulting figure will reduce.

• The resulting figure will enlarge.

• The resulting figure will stay the same.

• There is not enough information to answer the question.

What does it mean if the scale factor is greater than 100% (greater than 1)?

• The resulting figure will be a reduction.

• The resulting figure will remain the same.

• The resulting figure will be an enlargement.

• There is not enough information to answer the question.

Using a horizontal scale factor of 80%, calculate the new length of the red side of the figure. Fill in the blank to answer the question: The new side length is _____ units.

Using a vertical scale factor of 175%, calculate the new height of the figure.

• 14 units

• 12 units

• 12.25 units

• 15.75 units

• 175 units

The pencil pictured was reduced to 60% of its original size. What are the new dimensions of the pencil?

• 0.9 units x 4.2 units

• 2.4 units x 11.2 units

• 1 unit x 5 units

• 0.9 units x 7 units

• 1.5 units x 4.2 units

A figure has a height of 25 inches. It was photocopied at a scale factor of 40%. What is the new height of the figure? Fill in the blank to answer the question: The new height of the figure is _____ inches.

Scale factor: 1 inch = 0.5 foot

The actual length of the sea horse is _____ feet.

Which vocabulary term describes scaling from figure S to T?

• Reduction

• Enlargement

• Ratio

• Percentage

• Area

What is the scale factor, as a percent, from figure S to T?

• 4%

• 400%

• 200%

• 104%

• 440%