Understanding Number Forms

Write the number 123 in word form.

• One hundred twenty-three

• One two three

• three hundred twenty-one

• Twelve three

What is the expanded form of the number 456?

• 400 + 50 + 6

• 4 + 5 + 6

• 40 + 50 + 6

• 4000 + 500 + 60

Use base ten blocks to represent the number 789. How many hundreds blocks are needed?

• 7

• 8

• 9

• 10

Write the number 234 in word form.

• Two hundred thirty-four

• Two three four

• three hundred and twenty-four

• Twenty-three four

What is the expanded form of the number 321?

• 300 + 20 + 1

• 3 + 2 + 1

• 30 + 20 + 1

• 3000 + 200 + 10

Use base ten blocks to represent the number 505. How many tens blocks are needed?

• 0

• 5

• 10

• 50

Write the number 872 in word form.

• Eight hundred seventy-two

• Eight seven two

• Ate hundred and seventy-two

• Eighty-seven two

What is the expanded form of the number 640?

• 600 + 40 + 0

• 6 + 4 + 0

• 60 + 40 + 0

• 6000 + 400 + 0

Use base ten blocks to represent the number 390. How many tens blocks are needed?

• 9

• 3

• 0

• 90

Write the number 157 in word form.

• One hundred fifty-seven

• One five seven

• hundred and fifty-seven

• Fifteen seven