# Multiplying Decimals, 2-Day Lesson, No-Prep Packets, 5.NBT.7

Subjects
Resource Types
Common Core Standards
Product Rating
4.0
File Type
PDF (Acrobat) Document File
2.01 MB   |   12 + answer keys pages

### PRODUCT DESCRIPTION

This product will get your students fluently multiplying decimals in just two days!

Day One: Reasoning the Decimal Placement. This lesson focuses on the decimal placement in the product of a multiplication problem. Students will learn two strategies- estimation and counting decimal places (see example below). Students don't have to solve any multiplication problems. The product is always given to them. They simply use their number sense and new strategies to reason the placement of the decimal.

Example- 4.5 x 6.7 is about 5 x 7 = 35 (estimation), then I know my answer has two decimal places because the problem has two decimal places, so if 45 x 67 = 3,015, then my actual product is 30.15, which is close to my estimate of 35.

Day 2: Solving with the Standard Algorithm. In this lesson students will build on what they learned in the first lesson by actually performing the multiplication themselves. They will still use the two strategies learned in Day 1 (estimation and counting the decimal places), but they will also use the standard algorithm for multiplication, treating the numbers as they would whole numbers. Day 2 also has students multiplying decimals in real-life situations through solving word problems.

Both Lessons Include:
-Partner Practice Problem Set
-Independent Practice
-Challenge problems for early finishers
-Exit Quizzes

This lesson is ideal for 5th grade, but could also be used as a review lesson for 6th or 7th grade.

Love this lesson? Here are some more decimal lessons from The Number Diva:

-Intro to Decimals through the Tenths Place
-Decimals through the Thousandths Place
-Decimal Expanded Form
-Rounding Decimals
-Comparing and Ordering Decimals, Day 1: In Fraction Form
-Comparing and Ordering Decimals, Day 2: In Decimal Form
-Dividing Decimals

Or get the entire Decimal Unit here:

Fifth Grade Math Decimal Unit: 10-Days of No-Prep Lesson Materials

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Happy Teaching!

The Number Diva
sallywinchester@gmail.com
Total Pages
Included
Teaching Duration
2 Days

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