

Adding and Subtracting Decimals
Presentation
•
Mathematics
•
4th Grade
•
Practice Problem
•
Medium
Standards-aligned
Brian Marrs
Used 141+ times
FREE Resource
5 Slides • 4 Questions
1
Adding and Subtracting Decimals
It's just like adding whole numbers with the traditional algorithm

2
LINE UP YOUR PLACE VALUES!!!!!!!!!!!!!!!!!!!!!!
You can use the decimal to keep your place values in line!
You will NOT always have both a tenths and hundredths place.
Turn your paper sideways to track the place values.
3
Multiple Choice
Let's give this a try!
342.7 + 23.49
366.19
365.56
57.76
366.29
4
When you're adding decimals:
Be sure to line up the decimals
Be sure to add the tenths to the tenths, and the hundredths to the hundredths
Remember that ten tenths is one one
5
Multiple Choice
Let's try another one!
194.5 + 18.76
382.1
213.26
212.81
38.21
6
When you're subtracting decimals:
Line up your place values!
Regroup place values if needed!
Don't forget to check your work!
7
Multiple Choice
OK... Let's subtract!
756.9 - 62.14 = ?
714.5
694.84
714.84
694.76
8
Remember- Subtracting requires:
Regrouping place values when necessary
Checking your answer with addition
Lining up your place values
9
Multiple Choice
Last guided attempt!
463.7 - 76.08 = ?
393.78
413.78
387.62
387.78
Adding and Subtracting Decimals
It's just like adding whole numbers with the traditional algorithm

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