Montville Math News
Grade 2, Module 3, Topic C
Adapted with permission from the Lafayette Parish School System
nd
2 Grade Math
Module 3: Place Value, Counting, & Comparison on Numbers
to 1000
Focus Area– Topic C
Three-digit Numbers in Unit, Numeral, Expanded, and
Word Forms
Math Parent Letter
This document is created to give parents and students a
better understanding of the math concepts found in Eureka
Math (© 2013 Common Core, Inc.) material, which is
taught in the classroom. Module 3 of Eureka Math covers
Place Value, Counting, & Comparison on Numbers to
1000. This newsletter will discuss Module 3, Topic C.
Topic C.
Three-digit Numbers in Unit, Numeral,
Expanded, and Word Forms
Words to know
• Unit Form
• Word Form
• Number Bond
Place Value Charts
Hundreds
Number Form
Expanded Form
Standard Form
Tens
Ones
Count bundles on Place Value Charts
Hundreds
•
•
•
Fall
Tens
Ones
The number represented on the place value chart is 242.
Count Bundles and Write the Numbers on the Chart.
Things to remember!!!
Count 10 ones
Hundreds
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Count 10 tens
10, 20, 30, 40, 50, 60, 70, 80, 90, 100
Count 10 hundreds
100, 200, 300, 400, 500, 600, 700, 800, 900, 1,000
Standard Form and Number Form are the same thing.
1
Tens
1
Ones
The number represented by the bundles is 111.
Represent a Three-Digit Number with Number Bonds
OBJECTIVE OF TOPIC C
1
2
3
4
Count up to 1,000 on the place value chart.
Write base ten three-digit numbers in unit form; show the
value of each digit.
Write base ten numbers in expanded form
Write, read, and relate base ten numbers in all forms
1
6 hundreds 5 tens 2 ones
Match Unit Form with Number Form
Students should understand that a number can be
represented in different ways. On the left they are
written in unit form and on the right they are written
in number form. The student should be able to identify
which unit form matches the number form.
Numbers in Word Form
Again they learn that a number can be represented in
different ways. On the left they are written in word
form and on the right they are written in number form.
The student should be able to identify which word form
matches the number form.
Writing a Number in Expanded Form
Relate base ten numbers in all forms.
589
Write 232 in expanded form.
200 + 30 + 2 =252
Expanded form is a way to represent a number that
shows the sum of values for each digit of the number.
Expanded form can also be used to break a number
down even smaller.
100 + 100 + 10 +10 + 10 +1 + 1 = 232
200 is expanded into 100 + 100
30 is expanded into 10 + 10 + 10
2 is expanded into 1 + 1
Place Value Chart
Hundreds
Both problems are written in expanded form.
Bundles:
Tens
5
Unit Form: Writing an Expanded Form in Number Form
Write 800 + 60 + 9 in Number Form
800 + 60 + 9 = 869
Write 100 + 100 + 100 + 10 + 10 + 1 + 1 in Number
Form.
322
8
Ones
5 hundreds 8 tens 9 ones
Expanded Form:
500 + 80 + 9
Word Form:
Five hundred eighty-nine
9