Find the Scale Factor Proportions

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

What is the scale factor from ABCD to MNOP?

• 2/3

• 3/2

• 2

• 3

Tags

CCSS.7.G.A.1

What is the scale factor from MNOP to ABCD?

• 2/3

• 1/2

• 3/2

• 2

Tags

CCSS.7.G.A.1

The two rectangles are scale drawings. What is the measurement of x?

• 21

• 1.25

• 20

• 4

Tags

CCSS.7.G.A.1

A ski jump in a photograph is 3.5 inches in height. If the jump is 294 feet tall, what is the scale?    

• 1 in = 294 ft

• 1 in = 1029 ft

• 1 in = 84 ft

• 2 in = 294 ft

Tags

CCSS.7.RP.A.2C

If the scale factor is 1 : 2.5, that means each side in figure B is 2.5 times as big as each side in figure A.

How long is side S?

Mathematical Equivalence

OFF

Tags

CCSS.7.G.A.1

Hint: If the scale factor is 1:6 that means you multiply by 6.

Mathematical Equivalence

ON

Tags

CCSS.7.G.A.1

If the scale factor is 1:2, that means each side in figure B is twice as big as each side in figure A.

Mathematical Equivalence

ON

Tags

CCSS.7.G.A.1

If you want to find the scale factor from one figure to another, which formula should you use?

• New/Original

• Original/New

• Part/Whole

Tags

CCSS.7.G.A.1

A scale model of the Golden Gate Bridge in San Francisco Bay is built with a scale of 1 foot : 525 feet. If the main span of the bridge is 4, 200 feet long, what is the length of the main span in the model?

• 10 feet

• 3 feet

• 6 feet

• 8 feet

Tags

CCSS.7.RP.A.2C