Simplifying Ratios

What is the first step in simplifying a ratio?

• Subtract the smaller number from the larger one

• Multiply the numbers

• Find the greatest common factor

• Add the numbers together

What is the simplified form of the ratio 9:21?

• 21:9

• 7:3

• 9:3

• 3:7

How can you write the ratio 3:7 using a different format?

• 3 to 7

• 3 plus 7

• 3 minus 7

• 3 times 7

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What is the greatest common factor of 30 and 6?

• 3

• 5

• 6

• 1

If a ratio is already in simplest form, what is the greatest common factor of its terms?

• 0

• 1

• 2

• 10