Fraction Operations and Conversions

This lesson teaches how to multiply mixed numbers by first converting them into improper fractions. The process involves cross canceling to simplify the fractions before multiplying the numerators and denominators. The result is then converted back into a mixed number. The lesson concludes with checking if the final answer can be simplified further.

What is the first step in multiplying mixed numbers?

• Convert them to improper fractions

• Add them together

• Subtract them

• Divide them

How do you convert a mixed number to an improper fraction?

• Multiply the numerator by the denominator

• Add the whole number to the numerator

• Multiply the whole number by the denominator and add the numerator

• Subtract the numerator from the whole number

What is the improper fraction form of 3 and 2/3?

• 5/3

• 9/2

• 8/3

• 11/3

What is the improper fraction form of 2 and 3/9?

• 21/9

• 18/9

• 15/9

• 24/9

What is cross-canceling in fraction multiplication?

• Adding fractions together

• Subtracting fractions

• Simplifying fractions by dividing common factors across numerators and denominators

• Multiplying fractions directly

Which numbers can be cross-canceled in the example given?

• 3 and 21

• 11 and 9

• 11 and 21

• 3 and 9

What is the result of multiplying the numerators 11 and 7?

• 72

• 18

• 77

• 63

What is the result of multiplying the denominators 1 and 9?

• 18

• 7

• 11

• 9

How do you convert an improper fraction to a mixed number?

• Divide the numerator by the denominator

• Add the numerator to the denominator

• Multiply the numerator by the denominator

• Subtract the denominator from the numerator

What is the mixed number form of 77/9?

• 8 and 4/9

• 9 and 5/9

• 7 and 8/9

• 8 and 5/9