Understanding Two-Digit Numbers

What is the expanded form of the number 15?

• 5 + 10

• 10 + 5

• 1 + 5

• 15 + 0

How many groups of ten are needed to build the number 23?

• 4

• 3

• 2

• 1

What does the digit '3' represent in the number 34?

• 3 ones

• 30

• 3 tens

• 3 groups of ten

In the number 40, what does the zero signify?

• Four ones

• No tens

• No ones

• Four tens

How would you write 56 in expanded form?

• 60 - 4

• 50 + 6

• 56 + 0

• 5 + 6

What is the expanded form of 72?

• 70 + 2

• 7 + 2

• 60 + 12

• 72 + 0

How many groups of ten are needed to build the number 85?

• 3

• 10

• 5

• 8

What is the expanded form of 91?

• 90 + 1

• 91 + 0

• 80 + 11

• 9 + 1

How would you write 17 in expanded form?

• 10 + 7

• 1 + 7

• 17 + 0

• 15 + 2

What is the expanded form of 30?

• 20 + 10

• 10 + 20

• 3 + 0

• 30 + 0