NC.4.NBT.2

Read and write multi-digit whole numbers up to and including 100,000 using numerals, number names, and expanded form.

Step 1: Lesson Standards & Learning Goals

Unpacking Clarification

Students will read and write numbers in various forms.

Standard form is numerals only.
Written form or number name requires students to write out a number in words such as 285 = two hundred eighty-five.
Traditional expanded form is 285 = 200 + 80 + 5. Students should also explore nontraditional expanded forms such as 28 tens plus 5 ones or 1 hundred, 18 tens, and 5 ones. They should also expand numbers by place value using multiplication in the notation, such as 285 = (2 x 100) + (8 x 10) + (5 x 1).

In this standard, students need to understand the role of commas. Each group of 3 digits between commas is read as hundreds, tens, and ones followed by the appropriate unit. For example, the number 97,345 would be read ninety-seven thousand, three hundred forty-five.

Sample Essential Questions

How are greater numbers read and written?

How do we write numbers in three different ways?

What are some different ways to represent numbers?

Vocabulary

Digit
Expanded form
Number name
Numeral
Period
Place value
Standard form
Whole number
Word form
Written form

Students will be able to...

Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form.
Represent numbers using standard, written, traditional and non-traditional expanded forms.

Students will know...

The comma separates each period of numbers.
Where the comma should be placed in standard and written forms.
Different ways to represent numbers using standard, written, and expanded forms.

Step 2: Assessment