Understanding Expanded Form

What is the expanded form of the number 12?

• 20 + 1

• 12

• 10 + 2

• 1 + 2

How would you express the number 945 in expanded form?

• 900 + 45

• 900 + 40 + 5

• 90 + 45

• 9 + 4 + 5

Which of the following represents the expanded form of 7806?

• 7806

• 7000 + 800 + 6

• 780 + 6

• 700 + 80 + 6