
Topic 2-3 Add Whole Numbers
Presentation
•
Mathematics
•
4th Grade
•
Hard
Standards-aligned
JODI HETMAN
Used 16+ times
FREE Resource
9 Slides • 3 Questions
1
Topic 2-3 Add Whole Numbers
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Today's Lesson will teach us:
How to add numbers to one million with and
without regrouping using the standard algorithm.
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Vocabulary
An algorithm is a set of steps used to solve a problem.
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Vocabulary
Operations that can undo each other are inverse operations.
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Multiple Choice
What is the inverse operation for the addition problem 239 + 751?
751 + 239 = 990
990 - 731 = 239
(239 + 751) = (751 + 239)
751 + 9 + 30 + 200 = 990
6
Solve & Share Question
Take time to try this problem and then come back
(to class / to our Zoom call / etc.):
Erica's class collected 4,219 bottles for the recycling center. Ana's class collected 3,742 bottles. Leon's class collected 4,436 bottles. How many bottles did the three classes collect altogether?
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White board demonstration
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Before we solve this one, let's ESTIMATE the answer.
Round to the hundreds place first.
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Multiple Choice
What is the estimate we are adding for the insects and spiders questions. Remember, round to the hundreds BEFORE you add.
7,800 + 4,900
7,836 + 4,900
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Return to Whole Group / Zoom Call
What is 7,800 + 4,900?
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Multiple Choice
How many species did the volunteers catalog?
12,758 species
13,728 species
12,700 species
11,728 species
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When you complete your practice buddy, make sure you read the directions.
You will estimate then you will find the actual sum.
Topic 2-3 Add Whole Numbers
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