Multiply Whole Number and Decimals

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Lesson Plans and Worksheets for Grade 5
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Common Core For Grade 5


Examples, solutions, videos and lessons to help Grade 5 students reason about the product of a whole number and a decimal with hundredths using place value understanding and estimation.

Common Core Standards: 5.NBT.7, 5.OA.1, 5.OA.2, 5.NBT.1

New York State Common Core Math Module 2, Grade 5, Lesson 12
Worksheets for Grade 5

Lesson 12 Concept Development
Problems 1 - 3
2.31 × 22 =
2.31 × 221 =
2.31 × 201= Lesson 12 Problem Set

1. Estimate, and then solve using the standard algorithm. You may draw an area model if it helps you.
a. 1.21 × 14 ≈ ____ × ____ = _____

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2. Estimate, and then solve using the standard algorithm. Use a separate sheet to draw the area model if it helps you.
b. 1.3 × 26
c. 0.23 × 14
e. 7.06 × 28
Homework:
3. Eric walks 2.75 miles to and from work every day for an entire year. How many miles did he walk?
5. Gerry spends $1.25 each day on lunch at school. On Fridays she buys an extra snack for $0.55. How much money will she spend in two weeks?

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Lesson 12 Homework
1. Estimate, and then solve using the standard algorithm. You may draw an area model if it helps you.
a. 24 × 2.31 ________ × _______ = _________
3. Eric walks 2.75 miles to and from work every day for an entire year. How many miles did he walk?

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