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Decimals: Adding & Subtracting ~ Crack the Code!

Decimals: Adding & Subtracting  ~ Crack the Code!
Decimals: Adding & Subtracting  ~ Crack the Code!
Decimals: Adding & Subtracting  ~ Crack the Code!
Decimals: Adding & Subtracting  ~ Crack the Code!
Decimals: Adding & Subtracting  ~ Crack the Code!
Decimals: Adding & Subtracting  ~ Crack the Code!
Decimals: Adding & Subtracting  ~ Crack the Code!
Decimals: Adding & Subtracting  ~ Crack the Code!
Product Description
Decimals: Adding & Subtracting ~ Crack the Code!

This activity includes TWO fun and engaging puzzles (grades 5-7) for students to solve, while getting computation practice. They’ll enjoy the challenge and feedback is immediate through solving the puzzles (quotes from The Phantom Tollbooth) correctly.

These Crack the Code puzzles are in table format. Students must determine whether they’re looking for missing addends (using subtraction) or sums as they solve 20 problems (in each puzzle) to fill in the table. A sample problem to show them how to solve these types of problems is included, if needed. There are also two student versions- one with an additional alphabet table to help them organize their answers and one without, in each puzzle.

Built-in problem-solving challenges involve computation errors. One wrong addend or sum can throw off an entire row or column of answers. Their challenge will be finding a way to track down their errors, make their corrections and successfully Crack the Code.

Included in this resource:

♦ Addition & Subtraction of decimals using inverse operation
♦ Teaching Notes and Answer Key
♦ Sample problem to show how to fill in the table
♦ 2 puzzles, 20 problems each, student copies in BW
♦ Aligns with CCSS

Ways to use Crack the Code puzzles~
Centers • Go-to Activities • Fun Class Challenge • Small Group Challenges • Paired Work (Buddy up!) • Test Prep • Homework • Sub Days • RTI

Quotes:
“It shall be unlawful, illegal, and unethical to think, think of thinking, surmise, presume, reason, meditate, or speculate while in the Doldrums.” Lethargians

"Just because you have a choice, it doesn't mean that any of them 'has' to be right."
~ Norton Juster, The Phantom Tollbooth

★ This resource is part of the Phantom Tollbooth Bundle.

Click HERE for additional Crack the Code puzzles.


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© 2015 Pamela Kranz All Rights Reserved
Total Pages
11 pages
Answer Key
N/A
Teaching Duration
40 minutes
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