The video tutorial from Gtech Technos Solution Private Limited covers the concept of estimation, focusing on rounding numbers to make reasonable guesses of actual values. It explains how to round numbers to the nearest ten, both higher and lower, and extends these techniques to larger numbers like hundreds and thousands. The tutorial emphasizes that estimation simplifies calculations by providing approximate answers close to the original values.

What is the main purpose of estimation in calculations?

• To make a reasonable guess of the actual value

• To find the exact value

• To complicate the calculation

• To avoid any calculations

Which of the following is an example of rounding off in addition?

• Rounding 17 to 20

• Rounding 104 to 110

• Rounding 32 to 40

• Rounding 226 to 230

What is the estimated result of multiplying 23 by a rounded number?

• 200

• 230

• 184

• 210

When rounding 55 to the nearest 10, what is the result?

• 70

• 60

• 50

• 55

Which number is 47 rounded to the nearest higher 10?

• 60

• 45

• 50

• 40

What is the nearest lower multiple of 10 for the number 53?

• 40

• 55

• 50

• 60

If 41 is rounded to the nearest lower 10, what is the result?

• 50

• 45

• 40

• 35

What is the nearest multiple of 100 for the number 600?

• 500

• 700

• 600

• 800

How is the number 8,635 rounded to the nearest hundred?

• 8,800

• 8,650

• 8,700

• 8,600

What is the rounded value of 15,021 to the nearest thousand?

• 15,200

• 15,000

• 15,020

• 15,100