Estimating to Check the Reasonableness of Your Answer in Word Problems

This video tutorial teaches how to check the reasonableness of answers using estimation. It covers various estimation strategies such as rounding, clustering, using friendly numbers, and front-end estimation. The tutorial emphasizes the importance of estimation in solving word problems and provides a practical example involving carpet measurement to demonstrate the application of these strategies. The lesson concludes by reinforcing the concept of estimation as a tool for verifying the accuracy of solutions.

What is the first step in solving word problems according to the lesson?

• Write an equation

• Draw a picture

• Read the problem

• Estimate the answer

Which estimation strategy involves rounding each number to the nearest whole number?

• Clustering

• Using friendly numbers

• Front-end estimation

• Rounding

When is clustering most effective as an estimation strategy?

• When numbers are prime

• When numbers are very small

• When numbers are very large

• When numbers are close to each other

What are friendly numbers?

• Numbers that are easy to compute mentally

• Numbers that are prime

• Numbers that are always even

• Numbers that are always odd

In the carpet problem, what was the estimated area of the room using friendly numbers?

• 250 square feet

• 200 square feet

• 275 square feet

• 300 square feet

How much was the estimated cost of carpeting the room using rounded numbers?

• $850

• $800

• $700

• $750

Why is it important to check the reasonableness of your answer?

• To verify the answer makes sense

• To ensure the answer is exact

• To make the problem easier

• To avoid using a calculator