3-Digit Subtraction with Regrouping and Zeros

The video tutorial explains how to perform three-digit subtraction with regrouping, focusing on cases where zeros are involved. It provides two examples: subtracting 128 from 403 and 167 from 305. The process involves regrouping hundreds into tens and tens into ones to facilitate subtraction. Each example is broken down into clear steps, demonstrating how to handle situations where there are insufficient digits to subtract from.

What is the first step in solving 403 - 128?

• Subtract the ones place

• Subtract the tens place

• Regroup one hundred as ten tens

• Regroup ten tens as one hundred

After regrouping one hundred as ten tens in the first example, how many tens do we have?

• 9 tens

• 5 tens

• 3 tens

• 10 tens

In the first example, what do we do after regrouping 110 as 10 ones?

• Subtract the ones place

• Subtract the hundreds place

• Regroup another hundred

• Subtract the tens place

What is the result of 13 - 8 in the first example?

• 3

• 5

• 6

• 7

What is the final result of 403 - 128?

• 275

• 285

• 265

• 295

In the second example, what do we do when we have no tens to regroup from?

• Subtract directly

• Regroup from the hundreds place

• Skip the step

• Regroup from the ones place

After regrouping one hundred as ten tens in the second example, how many hundreds do we have?

• 1 hundred

• 3 hundreds

• 2 hundreds

• 4 hundreds

What is the result of 15 - 7 in the second example?

• 9

• 8

• 7

• 6

What is the result of 9 - 6 in the second example?

• 3

• 2

• 4

• 5

What is the final result of 305 - 167?

• 158

• 148

• 138

• 128