Complex Fractions and Proportions

The video tutorial covers complex fractions, starting with an introduction and solving examples. It then incorporates complex fractions into proportions and applies them to word problems. The lesson concludes with practice problems to reinforce learning.

What is a complex fraction?

• A fraction with a negative number

• A fraction with a decimal

• A fraction with another fraction in the numerator or denominator

• A fraction with a whole number

How do you solve a complex fraction?

• Add the fractions

• Convert to improper fractions and divide

• Multiply the fractions

• Subtract the fractions

What is the first step in solving a complex fraction?

• Multiply the fractions

• Add the fractions

• Write it horizontally

• Convert to a decimal

In the example, what is the result of 1 and 1/4 divided by 1?

• 1 and 1/4

• 25/4

• 5/4

• 6 and 1/4

What is the result of 3 divided by 2 and 1/4?

• 1 and 1/15

• 6/5

• 3/2

• 5/4

How do you incorporate complex fractions into proportions?

• By adding them

• By cross-multiplying

• By subtracting them

• By converting to decimals

What is the result of cross-multiplying 12 * X = 2 * 2 and 1/5?

• 24/5

• 12/5

• 48/5

• 25/5

What is the final answer for X in the proportion problem?

• 25/72

• 48/5

• 9 and 3/5

• 12/5

In the push-up word problem, how many push-ups can be done in 2 and 1/2 minutes?

• 12

• 45

• 60

• 30

In the butter and flour problem, how much flour is needed if only 1/4 cup of butter is available?

• 1/2 cup

• 1 and 1/2 cups

• 1 cup

• 3/4 cup