Converting Mixed Numbers and Fractions

This video tutorial is part two of unit four, lesson 12, focusing on multiplication and division with fractions. It covers solving fraction problems, introduces the cross cancellation technique, and uses visual aids like paper rolls to explain concepts. The lesson concludes with instructions for homework.

If a student is 4 feet tall and the teacher is 5 and 2/3 feet tall, how many times taller is the teacher than the student?

• 1 and 2/3

• 1 and 1/3

• 1 and 1/2

• 1 and 5/12

What is the first step in converting a mixed number to an improper fraction?

• Subtract the numerator from the whole number

• Multiply the whole number by the denominator

• Add the numerator to the denominator

• Divide the numerator by the denominator

When dividing fractions, what operation do you perform with the divisor?

• Divide by the reciprocal

• Subtract the reciprocal

• Add the reciprocal

• Multiply by the reciprocal

How do you simplify the fraction 60/24?

• Divide both by 2

• Divide both by 12

• Divide both by 6

• Divide both by 3

What is the result of 1 and 7/8 divided by 3/4?

• 2 and 1/2

• 2 and 1/4

• 2 and 5/8

• 2 and 3/8

In a word problem, if a runner ran 1 and 4/5 miles on Monday and 6 and 3/10 miles on Tuesday, how many times the Monday distance is the Tuesday distance?

• 3 and 1/5

• 3 and 1/3

• 3 and 1/4

• 3 and 1/2

What is the purpose of cross-cancellation in fraction multiplication?

• To add fractions

• To simplify before multiplying

• To convert to improper fractions

• To find the reciprocal

If a cyclist planned to ride 9 and 1/2 miles but only traveled 3 and 7/8 miles, what fraction of the planned trip did they complete?

• 1/2

• 31/76

• 2/5

• 3/4

How many times longer is the long paper roll compared to the short paper roll if the long roll is 11 and 1/4 inches?

• 2 and 1/5

• 2 and 1/3

• 2 and 1/4

• 2 and 1/2

What is the length of each short paper roll if the long roll is 11 and 1/4 inches and is 2 and 1/2 times longer?

• 4 and 2/3 inches

• 4 and 1/4 inches

• 4 and 3/4 inches

• 4 and 1/2 inches