Estimation Strategies and Techniques

In this lesson, Mrs. Cox teaches students how to estimate products of fractions using compatible numbers. The video covers various techniques, including using bar diagrams and rounding mixed numbers to the nearest whole number. Students are guided through multiple examples and practice problems to reinforce their understanding. The lesson emphasizes the importance of estimation in finding approximate answers and provides strategies for simplifying complex fractions.

What is the main purpose of using compatible numbers in estimation?

• To get an exact answer

• To confuse the students

• To simplify the calculation

• To make the numbers look nicer

Which pair of numbers is considered compatible in the example given?

• 20 and 3

• 18 and 3

• 17 and 3

• 19 and 3

When rounding mixed numbers, what determines whether you round up or down?

• The size of the fraction

• The whole number part

• The teacher's preference

• The color of the book

In the guided practice, what is the estimated product of 1/2 and 25?

• 10

• 12

• 20

• 15

What is a bar diagram used for in estimation?

• To draw pretty pictures

• To divide numbers into parts

• To confuse students

• To make the lesson longer

Which strategy is NOT mentioned for determining if a number will go up or down?

• Using a number line

• Drawing a model

• Dividing the denominator in half

• Flipping a coin

In the homework section, what is the estimated product of 2/3 and 26?

• 22

• 20

• 18

• 16