Magnitude Estimates

1. Making
Magnitude
Estimates (universal experience or sub-skill):
{ Rounding and estimating using powers of 10
CFU:
What are we going to do today?
What are we going to (skill)?

2. (universal experience or sub-skill):
 We already know how to count by
tens, hundreds, and thouands. Let’s practice.
 We already know how to round to the nearest
10, 100, or 1,000.
 Let’s practice: 47,
Activate Prior
Knowledge(APK)
CFU (include connection to LO)

3.  Look to the place
 Mark the space
 Go to the right
 Start the fight
 0 to 4, don't change the score
 5 to 9, increase the line
Rounding Poem
Round 4,769 to the nearest hundred:
4,769

4. Magnitude Estimate: a
rough estimate. It tells
whether the answer should be
in the 10’s, 100’s, 1,000’s, and so
on.
Frontload Vocabulary

5.  Step 1: look to the largest place value of each
number
 Step 2: What place values are they in?
 Step 3: Add the two largest numbers together
 Step 4: What place value are they in?
 The answer is your magnitude estimate.
Practice on Journal page 45
Magnitude Estimates for
CFU Addition and Subtraction

6.  Step 1: Round both factors to the nearest
multiple of a power of 10
 Step 2: Find the product of the rounded
numbers
 The answer is your magnitude estimate.
Practice on journal page 47
Magnitude Estimates for
CFU Multiplication and Division

7.  Where would this skill be
helpful in real life?
Importance
CFU:
Does anyone else have any other reason as to why it is important? Which
reason is most important to you? Why? You can give me my reason or your

8. (steps or processes)
Skill Development
CFU (strategic)

9. (steps or processes)
Guided Practice

10. (Concept, Skill, Importance-pair-share)
Closure

11. Independent Practice