Understanding Place Value in Numbers

This video tutorial explains the concept of place value in numbers, emphasizing how the value of a digit is determined by its position. It reviews the numerical system and base ten blocks, illustrating how numbers are constructed and compared. Common mistakes in understanding place value are addressed, and the use of arrow cards to build numbers is demonstrated. The tutorial concludes with a comparison of numbers to highlight the importance of place value in determining size.

What determines the value of a digit in a number?

• The color of the digit

• The number of digits in the number

• The position of the digit

• The size of the digit

How many individual cubes make up a group of ten in base ten blocks?

• 5

• 10

• 20

• 15

What is the value of the digit 5 in the number 257?

• 500

• 50

• 5000

• 5

When building the number 857, what is the value of the digit 8?

• 8

• 800

• 80

• 8000

In the number 3,914, what is the value of the digit 3?

• 3000

• 300

• 30

• 3

Which number is larger: 99 or 121?

• 121

• Cannot be determined

• 99

• They are equal

Why is 121 larger than 99 even though it has smaller digits?

• Because the 1 in 121 is in the hundreds place

• Because 121 has more digits

• Because 121 is a palindrome

• Because 99 is an odd number

What is the value of the digit 9 in the number 99?

• 9

• 90

• 9000

• 900

In the number 121, what is the value of the digit 2?

• 2

• 20

• 200

• 2000

What is the value of the digit 1 in the number 121?

• 1

• 10

• 100

• 1000