Rounding: Understanding the Rules and Applying Them to Place Value, Decimal Places, and Significant Figures

The video tutorial explains the rules of rounding numbers, including when to round up or down based on the last digit. It covers rounding by place value, decimals, and significant figures, providing examples for each. The tutorial also highlights the importance of identifying the deciding digit and offers tips for handling special cases like rounding up a 9. The video concludes with a summary of the key concepts and emphasizes understanding and applying the rules of rounding.

When rounding a number that ends in 7, what should you do?

• Round down

• Round to the nearest even number

• Round up

• Leave it as is

If you are rounding the number 14,678 to the nearest hundred, what is the result?

• 14,600

• 14,700

• 14,680

• 14,800

How do you determine which decimal place to round to when rounding to two decimal places?

• Look at the second decimal place

• Look at the fourth decimal place

• Look at the first decimal place

• Look at the third decimal place

What is the first step in identifying significant figures in a number?

• Count all the digits

• Identify the first nonzero digit

• Count the zeros

• Round the number first

What should you be cautious of when rounding a number that ends in 9?

• It may require rounding down

• It should be left as is

• It should be rounded to the nearest ten

• It may require double rounding