Adding and Subtracting Rational Expressions

The video tutorial covers the concept of ratios, explaining how to write and interpret them. It demonstrates calculating the value of ratios using examples like deer to bears and water to glue. The tutorial also introduces equivalent ratios and ratio tables, showing how to find equivalent ratios through multiplication, division, addition, and subtraction. Finally, it provides practice problems to reinforce the concepts learned.

What is a ratio?

• A comparison between two quantities

• A special kind of fraction

• A method to solve equations

• A type of mathematical operation

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CCSS.6.RP.A.1

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How do you write the ratio of 4 deer to 5 bears?

• 4:5

• 5:4

• 5 to 4

• 4/5

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What is the simplified form of the ratio 15 cats to 12 dogs?

• 4:5

• 12:15

• 15:12

• 5:4

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What is the value of the ratio when comparing three halves cups of water to two cups of glue?

• 3/2

• 2/4

• 2/3

• 3/4

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How do you find equivalent ratios?

• By adding different numbers to the numerator and denominator

• By dividing the numerator and denominator by the same number

• By multiplying or dividing each quantity by the same number

• By subtracting the same number from the numerator and denominator

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CCSS.6.RP.A.3A

In a ratio table, if you multiply the first column by 4, what should you do to the second column?

• Multiply by 2

• Multiply by 4

• Add 4

• Divide by 4

What is the ratio value of cups to quarts if simplified it equals 4?

• 4:1

• 3:4

• 4:4

• 1:4

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CCSS.6.RP.A.1

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What is the equivalent ratio of 3 drops of red dye to 2 drops of blue dye if multiplied by 4?

• 6:8

• 8:12

• 12:8

• 3:2

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CCSS.6.RP.A.3A

How do you simplify the ratio 12 kittens to 14 puppies?

• 6:7

• 7:6

• 12:14

• 14:12

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What is the value of the ratio for bikes to mopeds if the ratio is simplified to 3:4?

• 3:2

• 2:3

• 4:3

• 3:4

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CCSS.6.RP.A.1

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