This document explains how to write numbers in expanded form by identifying the value of each digit from left to right. It discusses that numbers can be written in standard form, expanded form, and word form. The core lesson shows how to write numbers like 735, 509, and 192 in expanded form by identifying the hundreds, tens, and ones places.

1. How do you write the expanded
form of a number?

2. In this lesson you will learn to
write numbers in expanded form
by thinking about the value of
each digit.

3. Let’s Review
15 standard form
Numbers can be written in standard form,
expanded form, and word form.
10 + 5
1 ten and
5 ones
expanded form
fifteen word form

4. A Common Misunderstanding
Thinking that each part of a number is
only that number.
35
OnesTens3 + 5 30 + 5

5. Core Lesson
735
700 +
How many
hundreds, tens
and ones do I
have?
I have 7
hundreds, 3 tens
and 5 ones.
30 + 5 = 735

6. Core Lesson
509
500 +
What if there is
a zero in the
number?
9 = 509
5 hundreds
0 tens
9 ones

7. Core Lesson
I can write the number in expanded form
if I think about the value of each digit!
192
100 + 90 + 2 = 192

8. In this lesson you have learned to
write numbers in expanded form
by thinking about the value of
each digit.