Mastering 3-Digit Subtraction with Regrouping

What is the main topic of today's lesson?

• Addition of three-digit numbers

• Subtraction of three-digit numbers with regrouping

• Multiplication of three-digit numbers

• Division of three-digit numbers

When we don't have enough tens to subtract, what do we regroup?

• One hundred as ten tens

• One ten as ten ones

• One thousand as ten hundreds

• One hundred as ten ones

In the problem 328 - 153, do we have enough ones to subtract?

• We need to subtract more ones

• No, we need to regroup

• Yes, we have enough ones

• We need to add more ones

How many tens do we have after regrouping one hundred in the problem 328 - 153?

• 12 tens

• 10 tens

• 14 tens

• 16 tens

In the problem 414 - 123, do we have enough tens to subtract initially?

• We need to add more tens

• No, we need to regroup

• Yes, we have enough tens

• We need to subtract more tens

After regrouping in the problem 414 - 123, how many tens do we have?

• 13 tens

• 12 tens

• 11 tens

• 10 tens

What is the result of 414 - 123?

• 294

• 293

• 292

• 291

In the practice problem 345 - 161, do we have enough tens to subtract initially?

• No, we need to regroup

• We need to add more tens

• Yes, we have enough tens

• We need to subtract more tens

After regrouping in the problem 345 - 161, how many tens do we have?

• 12 tens

• 13 tens

• 14 tens

• 15 tens

What is the result of 345 - 161?

• 184

• 185

• 183

• 186