Comparing and Ordering Decimals

The video tutorial covers the concepts of comparing and ordering decimals. It explains the difference between comparing and ordering, with comparing involving two numbers and ordering involving more than two. The tutorial outlines three steps for ordering decimals: lining up decimals vertically, adding zeros if necessary, and comparing or ordering. An example is provided to demonstrate these steps, focusing on ordering from fastest to slowest time. The video concludes with an exercise for students to practice ordering decimals.

What is the main difference between comparing and ordering decimals?

• Comparing uses symbols like >, <, =; ordering arranges numbers.

• Comparing involves more than two numbers, ordering involves two.

• Both comparing and ordering involve arranging numbers.

• Ordering uses symbols like >, <, =; comparing arranges numbers.

Which symbol is NOT used in comparing decimals?

• Less than (<)

• Equal to (=)

• Greater than (>)

• Approximately equal to (≈)

What is the first step in ordering decimals?

• Write the numbers in a list

• Add zeros to the decimals

• Compare the numbers

• Line up the decimals vertically

Why do we add zeros when ordering decimals?

• To confuse the students

• To ensure all decimals have the same number of places

• To make the numbers look smaller

• To make the numbers look bigger

In the example, which number was the smallest?

• 8.655

• 9.127

• 12.17

• 10.2

What is the purpose of lining up decimals vertically?

• To make them look neat

• To compare the numbers easily

• To add them together

• To subtract them

When ordering from fastest to slowest time, what are we actually doing?

• Ordering from least to greatest

• Adding the numbers

• Ordering from greatest to least

• Comparing the numbers

If two numbers have the same digit in the ones place, what should you do next?

• Ignore them

• Add zeros to one of them

• Look at the tenths place

• Choose randomly

In the practice problem, which number should be placed first when ordering from slowest to fastest time?

• 8.286

• 8.9

• 8.650

• 8.65

What hint is given for ordering from slowest to fastest time?

• It's the opposite of greatest to least

• It's the same as greatest to least

• It's the opposite of least to greatest

• It's the same as least to greatest