Expanded Form and Subtraction Concepts

This video tutorial explains how to perform subtraction using expanded form. It begins by converting numbers into their expanded forms, such as turning 37 into 30 + 7 and 19 into 10 + 9. The tutorial then demonstrates the subtraction process, including borrowing when necessary, and concludes with the final calculation showing that 37 - 19 equals 18.

What is the first step in expanded form subtraction?

• Add the numbers together

• Write the numbers in expanded form

• Multiply the numbers

• Divide the numbers

How do you express the number 37 in expanded form?

• 300 + 70

• 3 + 7

• 30 + 7

• 37 + 0

What is the expanded form of 19?

• 100 + 90

• 19 + 0

• 10 + 9

• 1 + 9

What is the purpose of writing numbers in expanded form?

• To make them look bigger

• To make subtraction harder

• To break them down into place values

• To simplify addition

What is the expanded form of 45?

• 40 + 5

• 4 + 5

• 400 + 50

• 45 + 0

What is the expanded form of 82?

• 80 + 2

• 8 + 2

• 82 + 0

• 800 + 20

What is the expanded form of 64?

• 600 + 40

• 6 + 4

• 64 + 0

• 60 + 4

When subtracting in expanded form, what do you do if the digit being subtracted is larger?

• Multiply the digits

• Subtract as usual

• Borrow 10 from the next place value

• Add 10 to the smaller digit

In the example, what is the result of 17 - 9?

• 6

• 7

• 8

• 9

What is the result of 20 - 10 in the example?

• 15

• 10

• 20

• 5