Subtraction with Regrouping Concepts

Miss Turner demonstrates how to subtract three-digit numbers with regrouping using base 10 blocks. She starts by setting up the problem 321 minus 147, showing how to compose the number 321 with base 10 blocks. She explains the process of regrouping from tens to ones to subtract the ones place, and then from hundreds to tens to subtract the tens place. Finally, she verifies the result using the standard algorithm, ensuring students understand both the manipulative and algorithmic approaches to subtraction.

What is the main topic of Miss Turner's lesson?

• Adding three-digit numbers

• Subtracting three-digit numbers with regrouping

• Multiplying two-digit numbers

• Dividing four-digit numbers

What tools does Miss Turner use to demonstrate subtraction?

• Number line

• Base 10 blocks

• Abacus

• Calculator

What is the first step in setting up the problem 321 minus 147?

• Compose the number 321 using base 10 blocks

• Add the numbers together

• Subtract the hundreds

• Write the numbers in words

How many hundreds are used to represent the number 321?

• One hundred

• Four hundreds

• Two hundreds

• Three hundreds

Why can't Miss Turner take away seven ones from one one?

• Because she needs to multiply the ones

• Because she needs to add more ones

• Because she needs to divide the ones

• Because she doesn't have enough ones

What does Miss Turner do to solve the issue of not having enough ones?

• She divides the ones

• She adds more ones

• She multiplies the ones

• She regroups from the tens place

After regrouping, how many ones does Miss Turner have?

• Seven ones

• Eleven ones

• Ten ones

• Five ones

What is the next step after regrouping the ones?

• Subtract the hundreds

• Subtract the tens

• Add the tens

• Multiply the tens

How does Miss Turner handle the tens place when she cannot subtract four from two?

• She divides the tens

• She adds more tens

• She multiplies the tens

• She regroups from the hundreds place

How many tens are created after regrouping from the hundreds place?

• Ten tens

• Five tens

• Twenty tens

• Fifteen tens