Adding and Regrouping in Arithmetic

The video tutorial explains how to perform three-digit addition with regrouping. It provides two examples: adding 237 and 146, and adding 346 and 228. In each example, the process of adding ones, tens, and hundreds is demonstrated, including the need to regroup when the sum of a column exceeds nine. The tutorial emphasizes the importance of transferring extra ones to the tens column and extra tens to the hundreds column to achieve the correct sum.

What is the first step in adding 237 and 146?

• Add the hundreds

• Add the tens

• Regroup the tens

• Add the ones

Why do we need to regroup when adding 7 and 6 in the first example?

• Because the sum is less than 10

• Because the sum is a two-digit number

• Because the sum is a three-digit number

• Because the sum is zero

After regrouping the ones in the first example, what is the next step?

• Subtract the tens

• Add the hundreds

• Add the tens

• Add the ones again

What is the result of adding 237 and 146?

• 573

• 473

• 383

• 673

In the second example, what is the sum of the ones in 346 and 228?

• 14

• 12

• 16

• 18

Why do we need to regroup when adding 6 and 8 in the second example?

• Because the sum is zero

• Because the sum is a three-digit number

• Because the sum is a two-digit number

• Because the sum is less than 10

After regrouping the ones in the second example, what is the next step?

• Add the ones again

• Subtract the tens

• Add the tens

• Add the hundreds

What is the result of adding 346 and 228?

• 674

• 574

• 474

• 774