M2 L14 Powerpoint

1. Place Value and Problem Solving with
Units of Measure
Topic C: Rounding to the nearest ten and
hundred.
Module 2: Lesson 14
Objective: Round to the nearest hundred on the
vertical number line.

2. Fluency Practice (11 minutes)
Sprint: Find the halfway point (9 minutes)
Sprint A: Do as many problems as you can!
Sprint B: Try to get one more right than you
did on Sprint A!

3. Fluency Practice
(11 minutes)
Rename Ten
11 tens =__________ Say the number!
19 tens =__________ Say the number!
20 tens =__________ Say the number!
28 tens =__________ Say the number!
30 tens =__________ Say the number!
40 tens =__________ Say the number!

4. Application Problem
(9 minutes)
Materials: Place value mats, place value disks, (13 hundreds, 10
tens, and 8 ones)
Model the following on the place value chart.
• 10 tens
• 10 hundreds
• 13 tens
• 13 hundreds
• 13 tens and 8 ones
• 13 hundreds, 8 tens, 7 ones

5. Application Problem
(9 minutes)
• 13 hundreds, 8 tens, 7 ones looks like this:

6. Concept Development (30 minutes)
Materials: (T) Hide Zero Cards, (S) Personal White Boards
Part 1: Round three-digit numbers to the nearest hundred.
We’ve practiced rounding numbers to the
nearest ten. Today let’s find 132 grams rounded
to the nearest hundred.
How many hundreds are in 132 grams?
Show hide zero cards for 132.
Yes! One hundred!

7. Concept Development
(39 minutes)
Draw a number line on your boards and label the bottom tick mark
100=1 hundred.
200 = 2 hundreds What is 1 more hundred? Yes, 200! Label it
on the number line.
What number is halfway between 100 and
200? Write the number and it’s form next to
the tick mark.
100 = 1 hundred

8. Concept Development
(39 minutes)
When you look at the number line, is 132 more than halfway or less
than halfway between 100 and 200? How do you know?
200 = 2 hundreds What is 132 rounded to the nearest hundred?
Tell me in unit form.
1 hundred, 3 tens, 2 ones to the nearest 100 is __.
100 = 1 hundred
Continue with rounding 250 grams and 387 milliliters to the nearest hundred.

9. Concept Development
(30 minutes)
Problem 2: Round 4 digit numbers to the nearest hundred.
To round 387 milliliters to the nearest hundred, we drew a
number line with endpoints 3 hundreds and 4 hundreds.
Suppose we round 1,387 milliliters to the nearest hundred.
How many hundreds are in 1,387?
Yes, 13 hundreds. What is 1 hundred more?
Draw and label a number line with endpoints labeled 13
hundreds and 14 hundreds. Estimate & label the halfway
point and the location of 1,387.

10. The halfway point between 300 and 400 hundred is 350. The
halfway point between 1,300 and 1,400 is 1,350.
Is 1,387 more
than halfway or
less than halfway
between 13
hundreds or 14
hundreds?
What is 1,387
rounded to the
nearest hundred?
Concept Development
(30 minutes)

11. Concept Development
(30 minutes)
Continue using the following sequences:
1,582; 2,146; 3,245.

12. Problem Set (10 minutes)
You have 10 minutes to complete the problem set pages.
Debrief (10 minutes)
Let’s review your solutions for the problem set.

13. Exit Ticket
(3 minutes)
This is where you are going to show
us that you understand what we learned today!
We will learn if you are ready for the next lesson!

14. Homework
3-2 Lesson 14
Homework
Worksheet
Is Due Tomorrow!