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Add Decimals using Place Value Strategies





 
Videos to help Grade 5 students learn how to add decimals using place value strategies and relate those strategies to a written method.

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Lesson Plans and Worksheets for Grade 5

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More Lessons for Grade 5

Common Core For Grade 5

New York State Common Core Math Module 1, Grade 5, Lesson 9

Lesson 9 Concept Development
Problems 1–3
2 tenths + 6 tenths
2 ones 3 thousandths + 6 ones 1 thousandth
2 tenths 5 thousandths + 6 hundredths

Problems 4–6
1.8 + 13 tenths
1 hundred 8 hundredths + 2 ones 4 hundredths
148 thousandths + 7 ones 13 thousandths

Problems 7–9
0.74 + 0.59
7.048 + 5.196
7.44 + 0.774
Lesson 9 Homework

1. Solve.
a. 3 tenths + 4 tenths = _____ tenths
b. 12 tenths + 9 tenths = _____ tenths = _____ one(s) _____ tenth(s)



Lesson 9 Homework
1. Solve.
d. 27 hundredths + 7 hundredths = __ hundredths = __ tenths __ hundredths
2. Solve using the standard algorithm.
e. 72.564 + 5.137 =
3. Walkway Over the Hudson, a bridge that crosses the Hudson River in Poughkeepsie, is 2.063 kilometers. Anping Bridge, which was built in China 850 years ago, is 2.07 kilometers long.
a. Which bridge is longer? How much longer? Show your thinking.


 

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You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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