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# Understanding Place Value Units of One, Ten, and a Hundred

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## Blue Mountain

on 16 December 2013

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#### Transcript of Understanding Place Value Units of One, Ten, and a Hundred

Understanding Place Value Units of One, Ten, and a Hundred

Warm Up
Review
We can bundle and count ones, tens, and hundreds which helps us to understand the value of each digit in a number.

The value is how much we have of each digit.
Objective
We will count up and down up to 1,000 by using the following strategies:
COUNTING ON by ones, tens, and hundreds. Counting on is when you go from a smaller number to a bigger number.
COUNTING BACK by ones, tens, and hundreds. Counting back is when you go from a bigger number to a smaller number.
Step 1: Draw models for each part using a place value chart
Step 2: Using your models, what number did you create? How did you know?
3 tens 7 ones 4 hundreds
ones
tens
hundreds
7
3
4
7 ones
3 bundles of tens
4 bundles of hundreds
Now You Try!
You will start at 195 on the number line. You need to get to 173.
Question 1: What strategy will you use to count? Counting on or counting back? How do you know?
Question 2: Discuss with your partner the steps that you will take to count from 199 to 143 using ones and tens.
Independent Practice
Challenge: Can you think of a different strategy that will help you count?
Group A
Group B
Group C
Brandon-Andres
Jonathan-Timothy
Terry-Evelina
Will-Clementine

Selene-Felix