Mastering 3-Digit Addition with Regrouping

The video tutorial covers three-digit addition with regrouping. It begins with an introduction to the concept of regrouping in addition, followed by three examples. Each example demonstrates the step-by-step process of adding two three-digit numbers, highlighting the need to regroup when the sum of digits in a column exceeds nine. The tutorial uses visual aids to illustrate the transfer of extra tens and hundreds to the next column, ensuring a clear understanding of the addition process.

What is the first step in adding 256 and 178?

• Add the tens

• Add the hundreds

• Regroup the tens

• Add the ones

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What do you do when the sum of the ones place is a two-digit number?

• Ignore the extra digit

• Regroup it into tens and ones

• Write it as it is

• Add it to the hundreds place

Tags

CCSS.2.NBT.B.7

How many tens are left after regrouping 14 ones in the first example?

• 1

• 14

• 10

• 4

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

In the second example, what is the sum of the ones place for 367 and 286?

• 12

• 14

• 15

• 13

Tags

CCSS.2.NBT.B.7

What do you do with the extra ten after adding the ones in the second example?

• Add it to the tens place

• Add it to the hundreds place

• Ignore it

• Subtract it

Tags

CCSS.2.NBT.B.7

How many tens are left after regrouping 15 tens in the second example?

• 1

• 15

• 10

• 5

What is the sum of the hundreds place in the second example?

• 8

• 7

• 6

• 5

Tags

CCSS.2.NBT.B.7

In the third example, what is the sum of the ones place for 489 and 357?

• 15

• 16

• 18

• 17

Tags

CCSS.2.NBT.B.7

What do you do with the extra ten after adding the ones in the third example?

• Subtract it

• Add it to the tens place

• Ignore it

• Add it to the hundreds place

Tags

CCSS.2.NBT.B.7

What is the final sum of 489 and 357?

• 746

• 846

• 756

• 856

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2