Rounding and Estimation Concepts

The video tutorial teaches students how to make nearest estimates for addition and subtraction using rounding to the nearest ten. It emphasizes oral calculation without using fingers or calculators. Through examples, students learn to round numbers and compare estimated results with actual sums or differences. The tutorial concludes with a summary of the learning and encourages students to practice further.

What is the main focus of the lesson introduced in the video?

• Learning multiplication tables

• Making nearest estimates for addition and subtraction using rounding

• Using calculators for quick calculations

• Rounding numbers to the nearest hundred

What should you avoid using while practicing rounding and estimation?

• A calculator

• A pen and paper

• Both fingers and a calculator

• Your fingers

When rounding 13 to the nearest ten, what is the result?

• 10

• 15

• 13

• 20

What is the estimated sum of 13 and 10 after rounding?

• 23

• 20

• 30

• 25

What is the actual sum of 13 and 10?

• 30

• 20

• 25

• 23

When rounding 34 to the nearest ten, what is the result?

• 35

• 40

• 34

• 30

What is the estimated sum of 34 and 56 after rounding?

• 80

• 90

• 100

• 110

What is the actual sum of 34 and 56?

• 100

• 110

• 90

• 80

When rounding 73 to the nearest ten, what is the result?

• 70

• 73

• 75

• 80

What is the estimated difference between 82 and 73 after rounding?

• 5

• 10

• 15

• 9