G2: 3-Digit Addition Regroup Ones & Tens Lesson.

​What is Regrouping?

​In math, regrouping is making groups of tens when adding or subtracting two-digit numbers or larger numbers.

1. First place the numbers according to the place value starting from ones place.

2. Arrange the two 3-digit addends in order and add the numbers vertically.

3. Add the numbers in the ones place if the result is more than 10,

carry the tens place value to the next place value.

4. Add the numbers in the tens place and also add the carried value and write the result.

5. If the result is greater than 10 carry the digit to hundreds place value.

6. Add the numbers in the hundreds place and also add the carried value and write the result. This number is the sum.​

​ Steps to add 3-digit numbers with regrouping.

Multiple Choice

When we start adding two or three-digit numbers, what place do we start adding in?

• hundreds

• tens

• ones

• Mrs. Rice's Place

​Three-Digit Addition With Regrouping Regrouping is another name for carrying over. In the operation of addition, when the sum of the addends is greater than 9 in any of the columns, we regroup the numbers and carry over the extra digit to the preceding column.

​Three-Digit Addition With Regrouping Regrouping is another name for carrying over. In the operation of addition, when the sum of the addends is greater than 9 in any of the columns, we regroup the numbers and carry over the extra digit to the preceding column.

Multiple Choice

Remember the steps.

Solve each problem: 356+264=

• 400

• 620

• 511

• 320

Multiple Choice

Remember the steps:

377+254=

• 631

• 540

• 711

• 250

Multiple Choice

Remember the steps:

266+288=

• 645

• 789

• 456

• 554

Multiple Choice

Remember the steps:

554+118=

• 670

• 172

• 672

• 890

Multiple Choice

Remember the steps:

591+339=

• 930

• 825

• 730

• 360

Multiple Choice

Remember the steps:

496+257=

• 693

• 852

• 753

• 789

Multiple Choice

Remember the steps:

247+377=

• 764

• 624

• 140

• 654