Rounding to the Nearest 10 Using a Number Line

This video tutorial teaches how to round numbers to the nearest ten using a number line. It explains the concept of benchmark numbers, midpoints, and common mistakes in rounding. The tutorial provides examples of rounding numbers like 72 and 368, demonstrating when to round up or down based on their position relative to the midpoint. The lesson concludes with a summary of the key points covered.

What is a benchmark number in the context of rounding?

• A number that is exactly in the middle of two numbers

• A number that is always smaller than the given number

• A number that is used as a reference point for rounding

• A number that is always larger than the given number

What does the midpoint on a number line indicate?

• The starting point of the number line

• The middle point between two benchmark numbers

• The end point of the number line

• The exact number to round to

Which of the following is a common mistake when rounding numbers?

• Rounding numbers without considering the midpoint

• Counting increments by tens

• Rounding numbers to the nearest hundred

• Using a number line for rounding

If a number is exactly at the midpoint, what should you do?

• Round down to the lower benchmark number

• Choose any benchmark number randomly

• Round up to the higher benchmark number

• Leave the number as it is

How would you round the number 368 to the nearest 10?

• Round down to 350

• Round up to 380

• Round up to 370

• Round down to 360