Comparing Decimals: Key Concepts and Techniques

This video tutorial covers lesson 313 on comparing decimals. It begins with an introduction to the materials needed, including math journals and whiteboards. The lesson includes exercises on comparing decimals using symbols, comparing Olympic swimming times, and comparing dental floss usage. Students engage in a math journal activity to color grids and mark decimals on a number line. The tutorial emphasizes the importance of place value in comparing decimals and concludes with a discussion on a student's error in decimal placement.

Which tool is not listed as necessary for the lesson on comparing decimals?

• Marker

• Whiteboard

• Calculator

• Math journal

Tags

CCSS.5.NBT.A.3B

What symbol would correctly compare 95 hundredths to 3 tenths?

• >

• <

• =

• None of the above

Tags

CCSS.4.NF.C.7

Who won the 100 meter backstroke in the 2012 Summer Olympics?

• Katie Ledecky

• Ryan Lochte

• Michael Phelps

• Missy Franklin

Which decimal represents the faster swim time: 58.68 seconds or 58.33 seconds?

• 58.68 seconds

• 58.33 seconds

• Both are the same

• Cannot be determined

Tags

CCSS.5.NBT.A.3B

Between Samantha and Eli, who used more dental floss?

• Samantha

• Eli

• Both used the same amount

• Information not provided

Tags

CCSS.4.NF.A.2

In the math journal activity, what decimal value is represented by coloring five tenths?

• 0.5

• 0.005

• 5

• 0.05

Tags

CCSS.4.NF.C.6

On a number line, where would you place 53 hundredths?

• None of the above

• Between 0.05 and 0.06

• At 0.53 exactly

• Between 0.5 and 0.6

Tags

CCSS.6.NS.C.6C

Which decimal is greater: 49 hundredths or 8 tenths?

• 49 hundredths

• 8 tenths

• Both are equal

• Cannot be determined

Tags

CCSS.4.NF.C.7

What mistake did Austin make when placing decimals on the number line?

• Misplaced only nine hundredths

• Correctly placed both decimals

• Placed nine tenths and nine hundredths at the same point

• Misplaced only nine tenths

Tags

CCSS.5.NBT.A.3B

Which is larger: six tenths or four tenths?

• Both are equal

• Six tenths

• Cannot be determined

• Four tenths

Tags

CCSS.4.NF.C.7