2.NBT.3-Expanded Notation and Word Form

Expanded form is a way of writing numbers that shows the value of each digit. For example, the number 432 can be written in expanded form as 400 + 30 + 2.

To convert from expanded form to standard form, you add the values of each part together. For example, 600 + 40 + 2 equals 642.

The standard form of 300 + 20 + 5 is 325.

The place value of a digit is determined by its position in the number. For example, in the number 689, the digit 6 is in the hundreds place, 8 is in the tens place, and 9 is in the ones place.

The expanded form of 760 is 700 + 60 + 0.

The number 147 can be written in expanded form as 100 + 40 + 7.

The expanded form of 689 is 600 + 80 + 9.

The purpose of using expanded form is to help understand the value of each digit in a number and to facilitate addition and subtraction.

You can check if your expanded form is correct by adding the parts together to see if they equal the original number.

The standard form of 400 + 30 + 2 is 432.