Mastering Multiplication of Whole Numbers and Mixed Numbers

The video tutorial explains how to calculate the total amount of sugar needed for three batches of sugar cookies, each requiring one and a half cups of sugar. It demonstrates two methods: repeated addition and multiplication. The tutorial highlights common mistakes in multiplication and emphasizes converting mixed numbers to improper fractions for accurate results. The process involves changing whole numbers and mixed numbers to improper fractions, multiplying them, and simplifying the result to find the correct total of four and a half cups of sugar.

How many cups of sugar are required for one batch of sugar cookies?

• 1.5 cups

• 0.5 cups

• 3 cups

• 2 cups

Tags

CCSS.3.OA.A.3

If three batches of cookies are made, how many cups of sugar are needed in total using addition?

• 4.5 cups

• 3.5 cups

• 4 cups

• 5 cups

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

What is the incorrect result when multiplying 3 by 1.5 by dragging the fraction along?

• 4.5 cups

• 5 cups

• 3 cups

• 3.5 cups

Tags

CCSS.6.NS.B.3

What is the correct total amount of sugar needed for three batches?

• 6 cups

• 4.5 cups

• 3.5 cups

• 5 cups

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

• Numerator as the number, denominator as one

• Numerator as one, denominator as the number

• Numerator as zero, denominator as the number

• Both numerator and denominator as the number

What is the improper fraction of 1.5?

• 3/2

• 2/3

• 1/2

• 1/3

Tags

CCSS.5.NF.B.6

What is the result of multiplying 3/1 by 3/2?

• 9/2

• 6/3

• 9/3

• 6/2

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

How many whole parts are there in 9 halves?

• 3

• 5

• 4

• 6

What is the mixed number form of 25/3?

• 8 1/3

• 7 2/3

• 9 1/3

• 8 1/2

Tags

CCSS.4.NBT.B.6

What is the remainder when 25 is divided by 3?

• 1

• 2

• 0

• 3

Tags

CCSS.4.NBT.B.6