Estimating Products of Fractions

The video tutorial introduces Chapter 4, focusing on estimating products of fractions. It begins with an essential question about multiplying and dividing fractions, followed by a discussion on standards. The lesson covers three methods of estimation: using compatible numbers, benchmarks, and whole numbers. Each method is explained with examples, and students are encouraged to practice and understand the reasoning behind each approach. The video concludes with a reminder to review notes and prepare questions for further discussion.

Why does the teacher start with Chapter 4?

• Because it is the shortest chapter.

• Because it is the first chapter in the book.

• Because it aligns with the scope and sequence for fractions.

• Because it is the easiest chapter.

What is the essential question for this chapter?

• How do we solve equations?

• What does it mean to multiply and divide fractions?

• What are the properties of whole numbers?

• How do we add and subtract fractions?

When estimating the product of a whole number and a fraction, what type of numbers should you use?

• Compatible numbers

• Prime numbers

• Odd numbers

• Even numbers

In the example 3/5 times 18, which number is chosen as a compatible number for 18?

• 15

• 25

• 20

• 10

When estimating the product of two fractions, what method is used?

• Prime numbers

• Whole numbers

• Compatible numbers

• Benchmarks

In the example 1/3 times 7/9, what are the benchmarks used for estimation?

• 0, 1/4, 1/2

• 1/3, 2/3, 1

• 0, 1/2, 1

• 0, 1/3, 1

When estimating the product of two mixed numbers, what method is used?

• Prime numbers

• Compatible numbers

• Benchmarks

• Whole numbers

In the example of the flower bed, what whole number is 14 and 7/8 rounded to?

• 14

• 15

• 16

• 13

What is the estimated area of a kitchen that measures 24 1/6 feet by 9 2/3 feet?

• 220 square feet

• 260 square feet

• 240 square feet

• 200 square feet

If a border is made with 32 2/3 bricks, each 1 1/6 feet long, what is the estimated length of the border?

• 30 feet

• 33 feet

• 32 feet

• 35 feet