Understanding Base Ten Blocks and Expanded Form

The video tutorial explains how to subtract decimals using base ten blocks and write the result in expanded form. It covers representing decimals with blocks, subtracting hundredths and tenths, and performing exchanges when necessary. The tutorial concludes by finalizing the difference and expressing it in expanded form.

What is the purpose of using base ten blocks in this lesson?

• To divide numbers

• To multiply numbers

• To find differences and write them in expanded form

• To add numbers

How many blue flats are used to represent two and fifty-eight hundredths?

• One

• Two

• Three

• Four

What color are the base ten blocks used to represent one and ninety-seven hundredths?

• Red

• Green

• Yellow

• Blue

How many bits are removed from two and fifty-eight hundredths during subtraction?

• Eight

• Seven

• Six

• Five

What is done when there are not enough longs to remove during subtraction?

• Add more longs

• Use bits instead

• Remove fewer longs

• Exchange a flat for ten longs

After performing the subtraction, how many longs are left?

• Seven

• Five

• Six

• Four

What is the final difference in expanded form?

• Seven-tenths plus zero-hundredths

• Eight-tenths plus three-hundredths

• Six-tenths plus one-hundredth

• Five-tenths plus two-hundredths

What does one bit represent in the base ten block system?

• One-hundredth

• One-tenth

• One whole

• One-thousandth

How many longs are equivalent to one flat in the base ten block system?

• Fifteen

• Ten

• Twenty

• Five

What is the main takeaway from using base ten blocks for subtraction?

• It complicates the process

• It helps visualize subtraction and expanded form

• It simplifies addition

• It is only useful for whole numbers