Mastering Mixed Number Multiplication

Mrs. Rothstein teaches 5th graders how to multiply mixed numbers by converting them into improper fractions. The lesson includes step-by-step instructions, example problems, and emphasizes the importance of showing work on scrap paper. Students are guided through converting mixed numbers to improper fractions, multiplying them, and converting the result back to a mixed number. The lesson concludes with a final problem and instructions for completing an assignment.

What is a mixed number?

• A number consisting of a whole number and a fraction

• A whole number

• A fraction where the numerator is larger than the denominator

• A fraction where the denominator is larger than the numerator

Tags

CCSS.3.NF.A.3C

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

• Add the whole number to the numerator without changing the denominator

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

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

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

What is the product of 23 and 6?

• 140

• 142

• 136

• 138

Tags

CCSS.4.NBT.B.5

How do you simplify the fraction 2/4?

• 3/4

• 1/4

• 1/2

• 2/8

What is the first step in multiplying mixed numbers?

• Convert to improper fractions

• Multiply the whole numbers

• Add the fractions

• Simplify the fractions

Tags

CCSS.5.NF.B.6

What is the improper fraction form of 2 and 1/3?

• 8/3

• 6/3

• 7/3

• 5/3

After multiplying the numerators and denominators, what is the next step?

• Simplify the fraction

• Convert back to a mixed number

• Add the fractions

• Multiply the denominators again

Tags

CCSS.5.NF.B.6

What is the mixed number form of 105/10?

• 10 and 3/5

• 11 and 1/2

• 10 and 1/2

• 10 and 1/5

How many times does 10 go into 105?

• 10 times

• 11 times

• 9 times

• 12 times

Tags

CCSS.4.NBT.B.6

What should you do after completing your work on scrap paper?

• Do the calculations again in your head

• Record your answer on the Google Form

• Submit it directly without checking

• Email it to the teacher