Exploring 2 Digit Addition with Regrouping

The video tutorial explains how to solve an addition problem with regrouping using the numbers 35 and 27. It guides through building the numbers, counting ones and tens, regrouping ones into tens, and finally performing the addition to get the result. The process emphasizes starting from the ones place and moving to the tens place, ensuring a clear understanding of regrouping.

What two numbers are being added in this problem?

• 25 and 17

• 45 and 32

• 35 and 27

• 30 and 20

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the first step in addition with regrouping?

• Regroup the tens into hundreds

• Build the numbers

• Combine the tens

• Combine the ones

Tags

CCSS.2.NBT.B.7

How many ones are in the number 35?

• 5

• 10

• 3

• 7

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

How many tens are in the number 27?

• 7

• 2

• 5

• 3

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

How many groups of ten can you make from the ones in 35 and 27 combined?

• 3

• 4

• 2

• 1

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

After regrouping, how many ones are left over?

• 2

• 3

• 1

• 0

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

How many ones does 35 have after regrouping?

• 0

• 5

• 10

• 2

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What does regrouping involve?

• Adding more ones

• Subtracting tens

• Splitting tens into ones

• Moving ones to the tens place

Tags

CCSS.2.NBT.B.7

What is the final result of 35 + 27?

• 72

• 52

• 60

• 62

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the sum of the tens place after adding 35 and 27?

• 6

• 5

• 4

• 3

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5