Exploring 2 Digit Addition with Expanded Form

The video tutorial teaches how to add two-digit numbers using the expanded form strategy. It begins with a review of expanded form, followed by step-by-step examples of adding numbers like 36 and 23, 43 and 25, 65 and 28, and 98 and 45. Each example breaks down the numbers into tens and ones, adds them separately, and combines the results. The video concludes with a preview of future tutorials on three-digit addition and subtraction using expanded form.

What is the expanded form of the number 349?

• 3000 + 400 + 90

• 300 + 40 + 9

• 3 + 4 + 9

• 3490

Tags

CCSS.2.NBT.A.3

What is the first step in writing a number in expanded form?

• Write the number as a sum of place values

• Multiply each digit by 10

• Identify the tens

• Identify the hundreds

Tags

CCSS.2.NBT.A.3

How do you start adding numbers in expanded form?

• Start with the thousands

• Start with the ones

• Start with the tens

• Start with the hundreds

Tags

CCSS.2.NBT.B.7

What is the result of adding 30 and 20 in expanded form?

• 500

• 50

• 30

• 60

Tags

CCSS.2.OA.A.1

What is the sum of 43 and 25 using expanded form?

• 58

• 68

• 78

• 88

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the correct addition of 8 ones and 5 ones?

• 13

• 3

• 85

• 15

Tags

CCSS.2.NBT.B.6

What is the sum of 60 and 20 in expanded form?

• 60

• 80

• 800

• 200

Tags

CCSS.2.OA.A.1

How do you handle carrying over in expanded form addition?

• Add the ones, then tens

• Add the tens, then ones

• Add the hundreds first

• Ignore carrying over

Tags

CCSS.2.NBT.B.7

What is the final result of adding 98 and 45 using expanded form?

• 133

• 163

• 153

• 143

Tags

CCSS.2.NBT.B.7

What future topics related to expanded form were mentioned?

• Multiplication and division

• Algebraic expressions

• Geometry and fractions

• Three-digit addition and subtraction

Tags

CCSS.2.NBT.A.3