Exploring 2-Digit and 3-Digit Addition in Expanded Form

This video tutorial teaches how to solve addition equations using expanded form. It begins with an introduction to the concept of expanded form, explaining how it utilizes place value to simplify addition. The tutorial then demonstrates solving a double-digit addition problem by expanding each number into its place values, adding them separately, and combining the results. The same method is applied to a triple-digit addition problem, showing the process of aligning numbers, expanding them, and calculating the total. The video emphasizes understanding place value to effectively use expanded form for addition.

Why is expanded form a useful strategy for addition?

• It is faster than other methods.

• It makes subtraction easier.

• It helps in understanding place value.

• It simplifies multiplication.

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CCSS.2.NBT.B.7

What is the first step in solving a double-digit addition equation using expanded form?

• Add the digits directly.

• Subtract the smaller number from the larger number.

• Rewrite the equation horizontally.

• Rewrite the equation vertically.

Tags

CCSS.2.NBT.B.7

In the number 56, what is the value of the digit 5?

• 5

• 500

• 0.5

• 50

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CCSS.4.NBT.A.1

How do you expand the number 56?

• 5 + 60

• 5 + 6

• 50 + 6

• 500 + 60

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CCSS.1.NBT.A.1

What is the value of the digit 3 in the number 32?

• 3

• 0.3

• 30

• 300

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CCSS.4.NBT.A.1

What is the expanded form of the number 32?

• 300 + 20

• 3 + 20

• 30 + 2

• 3 + 2

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CCSS.1.NBT.A.1

What is the sum of 50 and 30?

• 80

• 90

• 60

• 70

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CCSS.2.NBT.B.5

In the number 347, what is the value of the digit 4?

• 4

• 40

• 400

• 0.4

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CCSS.4.NBT.A.1

What is the expanded form of the number 251?

• 20 + 5 + 1

• 2 + 50 + 1

• 200 + 50 + 1

• 200 + 5 + 10

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CCSS.2.NBT.A.3

What is the final sum of 347 and 251 using expanded form?

• 578

• 588

• 598

• 568

Tags

CCSS.2.NBT.B.7