Two Digit Addition Techniques in Columns

The video tutorial teaches students how to add two-digit numbers by organizing them into columns. It explains the importance of aligning tens and ones correctly and provides examples using numbers 25+12, 42+14, and 36+22. The tutorial also demonstrates using objects to visualize the addition process, ensuring students understand the concept of stacking numbers in columns for easier calculation.

What is the purpose of arranging numbers in columns when adding two-digit numbers?

• To confuse the solver

• To take up more space on the page

• To make the numbers look bigger

• To make it easier to align and add similar place values

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

In the addition of 25 + 12, how many tens does the number 25 have?

• 5

• 2

• 12

• 25

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

When adding 25 and 12, where should the '2' from the number '12' be placed?

• Outside the columns

• Nowhere

• In the ones column

• In the tens column

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the sum of 42 and 14?

• 54

• 56

• 58

• 60

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

How many ones are there when adding 42 and 14?

• 6

• 8

• 10

• 4

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What objects can be used at home to represent tens and ones?

• Pencils and pennies

• Books and notebooks

• Cups and plates

• Shoes and socks

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

In the example of 36 + 22, how many tens are there in total?

• 3

• 5

• 8

• 10

Tags

CCSS.2.NBT.B.6

What is the total sum of 36 and 22?

• 56

• 62

• 58

• 60

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

How many ones result from the addition of 36 and 22?

• 6

• 7

• 9

• 8

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the purpose of using objects in learning addition?

• To increase calculation speed

• To reduce paper usage

• To make the problem harder

• To visualize the problem better

Tags

CCSS.1.OA.A.1