4.2B - PLACE VALUE REVIEW

Place value is the value of a digit based on its position in a number. For example, in the number 345, the 3 is in the hundreds place, so its value is 300.

The value of the digit 6 in the number 6,789 is 6,000 because it is in the thousands place.

Expanded notation is a way to write numbers by showing the value of each digit. For example, 345 can be written as (3 x 100) + (4 x 10) + (5 x 1).

The place value of the digit 4 in the number 4,567 is in the thousands place.

The value of the digit 2 in the number 2,345,678 is 2,000,000 because it is in the millions place.

To find the value of a digit, multiply the digit by the value of its place. For example, in 5,432, the value of 5 is 5 x 1,000 = 5,000.

The place value of the digit 9 in the number 9.99 is in the ones place.

The expanded form of the number 507 is (5 x 100) + (0 x 10) + (7 x 1).

The value of the digit 3 in the number 3,456,789 is 3,000,000 because it is in the millions place.

The place value of the digit 5 in the number 5,432 is in the thousands place.