# Decimals Review, Math Mystery: Add, Subtract, comparing, multiplying decimals

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Common Core Standards
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24 MB|16 pages
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1. This SKILLS math mystery bundle contains all of my skill/concept focused math mysteries for 5th Grade up to date! Make math fun and exciting with these engaging activities that will motivate even some of your most reluctant learners. MULTIPLE USES Use as a classroom review activity, include in your
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2. This complete math mystery bundle contains all of my math mysteries for Grade 5 up to date! Make math fun and exciting with these engaging activities that will motivate even some of your most reluctant learners.MULTIPLE USESUse as a classroom review activity, include in your math centers, leave for
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Product Description
This decimals review covers rounding, adding, subtracting, comparing and multiplying skills. This fun activity will engage and motivate your class while getting lots of decimal practice in! Students will be using their math skills to solve the Case of The Disappearing Donuts. NO PREP, print and go!

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An optional video hook is now available that you can use to set the stage to engage. It can be viewed for free at the link below:
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Preparation
- No Prep required! Print the student pages, staple or place
in a folder, and your students are set to go.
- Have the video hook ready for viewing at the start of the
lesson on an IWB, iPad or computer monitor screen.
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Math Skills Required to Unlock Clues

There are five clues to crack to solve the mystery:

Clue 1: Comparing Decimals (tenths, hundredths, and thousandths place values)
Clue 2: Multiplying and Dividing Decimals by Powers of 10
Clue 3: Rounding Decimals (wholes, tenths, hundredths, thousandths)
Clue 4: Adding and Subtracting Decimals (hundredths)
Clue 5: Multiplying Decimals by Whole Numbers (tenths and hundredths with whole numbers from 2-12)

Students must use critical thinking skills to figure out what the clue is telling them to eliminate from the list of possibilities.
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Multiple Uses
- Suitable for independent, pairs, or group work.
I recommend pacing this activity by giving students one clue at a time. Once the whole class has completed a clue, then move on to the next clue either within the same lesson or the next math session. New math content presented? Make a lesson out of it by modeling the math before diving into the clue. I like to say, "we must learn something new before attempting the next clue."
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How long will this activity take?
Time to complete will vary anywhere between 30mins - 2 hours or more! It mainly depends on how familiar your students are with the math mystery format, as well as how difficult they find math skills covered in the particular mystery. Please check the math skills outlined in the clues above to help determine suitability for your class.

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- If you would like more challenging math skills, select a higher grade level version of this mystery.
- If you would like a set of easier math skills, select a lower grade level version of this mystery.

This Decimals Math Mystery activity is also available for the other grade levels listed below:

Decimals Math Mystery: Case of the Disappearing Donuts (Grade 4)
Decimals Math Mystery: Case of the Disappearing Donuts (Grade 5)
Decimals Math Mystery: Case of the Disappearing Donuts (Grade 6)
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Add extra motivation with this Detective Rank Chart Download the Mystery Record & Rank Chart FREEBIE HERE
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Bundle and Save!
COMPLETE Math Mystery Bundle for GRADE 5
Holiday Math Mystery Bundle {GRADE 5}
Seasons Math Mystery Bundle Pack (GRADE 5)

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Not sure what a math mystery is? CLICK HERE to watch a video about Math Mysteries or read this blog post: What is a Math Mystery?

Read Blog Post: FIVE Easy Ways to use Math Mysteries in your Classroom.

TRY A FULL FREE MATH MYSTERY HERE (GRADES 1 - 6 DIFFERENTIATED BUNDLE)

Check out this blog post to save paper:
How to Create Reusable Math Mystery Files to Save Paper

Browse the range of 5th Grade Math Mysteries HERE.
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Thank you!

Mrs. J.

Total Pages
16 pages
Included
Teaching Duration
N/A
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