Decoding Practice
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Standard
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Caesar Cipher Practice - Create & Decode Ciphers/Puzzles (with answer key)
Caesar Cipher/Puzzle worksheet that teaches students the concept of a Basic Caesar Cipher, historically used in the military to encode & decode messages. Great resource to expose students to Math concepts involved in the Military. Requires students to be able to first learn to decode a Caesar Cipher, and then eventually create their own. Scaffolded with examples & directions to walk students through the process. Consists of a Word Document with 6 questions, so after purchase you can edit the
6th - 12th
Applied Math, Basic Operations, World History
Winter Code Math Puzzle | Subtraction Within 20| Decode the Winter Message
✨ Revised & Improved Version💡 Helpful Teaching Tip This revised activity is now fully aligned and student-friendly. Students should solve all subtraction problems first, then use their answers to decode the winter mystery message step by step. ✔ All subtraction problems have been carefully corrected ✔ All answers are within 20 (age-appropriate & consistent) ✔ Each number now matches the correct letter accurately ✔ The decoded message works smoothly with no mismatches This ensures students
K - 2nd
Arithmetic, Basic Operations, Mental Math
CCSS
K.OA.A.1
, 1.OA.A.1
, 1.OA.C.6
Easter Multiplication Riddles: Two Digit By One Digit
Decoding Easter Riddles is motivating and engaging for children, while practicing their multiplication skills. This resource is ready to use, with printable gameboards that are perfect for math centers, whole class or independent play. We sent some of our Easter Math Riddles home with our kiddos for extra practice and their parents loved them too! The instructions are simple and easy to follow, so your students will be ready to go in minutes. Useful teaching tips are also included, for those stu
3rd - 5th
Basic Operations, Math
Adding and Subtracting Fractions Scavenger Hunt Activity
Students will: * Find lowest common denominators to add and subtract fractions * Decode word problems to determine whether to add or subtract * Work collaboratively to practice and apply place value knowledge in a fun activity! A great, fun way for students to practice working with fractions! Students are given a problem and then work together to find the answer. The answer to one problem leads students to the next problem. Students work collaboratively to answer questions in a fun scavenger hun
5th - 7th
Basic Operations, Fractions, Math
CCSS
5.NF.A.1
Equation Decoder
Students solve a series of 20, one step algebraic equations involving addition, subtraction, multiplication, and division to decode a secret message. Each solution matches to a letter of the alphabet and when put together gives the message "equations are exciting"! Comes with an answer key as well. Great for algebra review. I like to use it for team races; each team gets one paper and tries to finish as quickly as possible with each team member solving one question then passing to a teammate.
5th - 7th
Algebra, Basic Operations, Math
CCSS
6.EE.B.5
Fun Math on Memorial Day!
This fun worksheet has multiplication problems using two digits by one digit combined with a secret message to decode for Memorial
Day! It is great for Math Centers, and a holiday activity.
2nd - 4th
Basic Operations, Math
Place Value Adventure - Space Explorer
Blast Off on a Place Value Mission! 🚀Captain Nova needs your help! This Space Explorer worksheet turns place value practice into an intergalactic adventure. Students will identify place values in space coordinates, decode alien messages with expanded form, and compare cosmic distances.Perfect for Grade 5, this resource aligns with Common Core standards (5.NBT.1-3) and includes a fun space riddle to solve. It’s a ready-to-launch, engaging way to make math out of this world
5th
Basic Operations, Numbers
Also included in: The Ultimate Number Sense Adventure! + BoNuS!!
Mini-Escape #4: Valentine’s Day Heist (Gr 3–6) | Cipher + Logic + Math Lock
Make February unforgettable with a bite-size escape that runs in a single class period. In Mini-Escape #4: Valentine’s Day Heist, the “stolen” cards kick off a classroom mystery. Teams decode an A=1 cipher (“IT WAS YOU”), solve candy-heart ordering with positional clues, and crack a 3-part math lock to enter the final combination 35-12-27—and discover the playful twist behind the “heist.” Use whole-group on a Smart Board or print for stations; no special props required. Mini-Escape-4-Valen
3rd - 6th
Basic Operations, Classroom Community, Other (ELA)
Murder in School, Problem Solving Mystery
A problem solving mystery where children have to work out who the killer is, where the murder was committed and what weapon they used. Mathematical strategies utilised include solving worded problems, division, decoding and using place value.
Works well with mixed ability pairs and children find this a fun and engaging activity.
Answers included for self/peer/teacher assessment.
5th - 6th
Basic Operations, Math, Other (Math)
1st Grade Subtraction within 20 Escape Room | Space Station | Print & Go
🚀 Escape the orbital station. Crack the airlock code. A print-and-go subtraction-within-20 escape room for 1st Grade. Students work as an emergency team aboard a space station, using subtraction skills to decode four clues and open the airlock before time runs out. What's inside • 19-slide PowerPoint presentation. • Three differentiated student sheets (support / standard / stretch). • Teacher answer key + 3 helpful hint cards. Differentiation • Support — subtraction within 10, single-step clues
K - 1st
Basic Operations
Escape from Krampus Coal Mines
A Christmas-Themed Math Escape Room (Grades 3–5) Your students will LOVE solving math problems to escape Krampus’s Coal Mines and return safely to the North Pole! This engaging, low-prep escape room is perfect for December math practice and keeps students motivated, collaborating, and thinking critically. In this festive adventure, students become a team of elves trapped by Krampus. To escape, they must work together to solve math challenges, decode secret combinations, and unlock their way thro
3rd - 5th
Basic Operations, Mental Math
CCSS
4.NBT.B.5
, 4.NBT.B.6
, 4.OA.B.4
Valentines Murder Mystery - Problem Solving
A Murder Mystery where pupils have to use different mathematical strategies to solve five clues. Each clue will allow them to eliminate names from a list of suspects until only one is left - the killer! Mathematical skills involved include decoding, use of co-ordinates, square numbers, decimals, multiplication, and working out fractions of numbers.
Children find this a fun and engaging task. Works well with mixed ability pairs.
Answers included for self/peer/teacher assessment.
5th - 6th
Basic Operations, Decimals, Math
Cryptogram Math Facts for Google Classroom (Addition & Subtraction) + PowerPoint
Engage your students with this interactive DIGITAL resource that works with Google Slides. This is an amazing code breaking interactive game for primary grades. Students will solve Math problems (addition and subtraction) to find the numbers corresponding to the letters in order to decode an encrypted message using a cryptogram code. This puzzle resource is highly engaging and develops mental skills. Students will practice Math Facts and have a fun during your Math lessons. PlotComic style educ
K - 3rd
Basic Operations, Math, Mental Math
CCSS
1.OA.A.1
, 1.OA.A.2
, 1.OA.B.4
+2
Cryptogram Math Facts for Google Classroom (Multiplication Division)+ PowerPoint
Engage your students with this interactive DIGITAL resource that works with Google Slides. This is an amazing code breaking interactive game for primary grades. Students will solve Math problems (Multiplication and Division) to find the numbers corresponding to the letters in order to decode an encrypted message using a cryptogram code. This puzzle resource is highly engaging and develops mental skills. Students will practice Math Facts and have a fun during your Math lessons. PlotComic style ed
2nd - 4th
Basic Operations, Math, Mental Math
CCSS
2.OA.A.1
, 2.OA.B.2
, 3.OA.A.1
+1
Scotland Themed Problem Solving Mystery
A problem solving mystery where children need to solve five clues to work out who stole a haggis on Robert Burns Night. Each clue solved will allow children to eliminate names from a list of suspects until only one is left - the thief! The maths skills utilised include co-ordinates, multiplication, additional, subtraction and decoding. Answers included for self/peer/pupil assessment.
5th - 6th
Basic Operations, Math
LCM & HCF Combined : Interactive Digital Math Worksheet
Preview Link: worksheet previewAssign this interactive and digital math worksheet to your classroom now. In this activity, students will work to calculate the LCM and HCF of given numbers. As they solve each problem, if their answers are correct, letters of a secret code will gradually reveal themselves. The goal is for students to solve all the problems, decode the secret message, and unlock the hidden code. Click to view more details about the worksheetThis worksheet is a classroom-ready inte
5th - 7th
Basic Operations, Math, Numbers
CCSS
5.NF.A.1
, 5.NF.B.6
, 6.NS.B.4
+2
Cubs Baseball Math Worksheet
One, two, three strikes your out at the ball game...but with this worksheet your students will be hitting Grand Slams on all of their math tests! With an easy to read chart packed with player stats, students will not only prove that they can solve addition and subtraction problems, but they will also sharpen their abilities to read charts, decode word problems, and think critically. With three distinct and leveled worksheets, this All-American approach to mathematics makes teaching Second and Th
2nd - 4th
Arithmetic, Basic Operations, Other (Math)
CCSS
2.NBT.B.6
, 3.NBT.A.2
, 2.OA.A.1
Football Problem Solving Mystery
A football team have just won an important cup and spend the night celebrating. However, the next morning they find that it has been stolen! Children must use a range of mathematical strategies to solve five clues. Each clue will allow them to eliminate names from a list of suspects until only one is left - the thief. The clues involve worded maths problems, addition, subtraction, multiplication, division, fractions of numbers, recognising number sequences and decoding. Answers included for sel
5th - 6th
Basic Operations, Fractions, Math
Adding and Subtracting Mixed Numbers Activity
Looking for a way to implement small groups or pairs into your lesson plans? I highly recommend this Adding and Subtracting Mixed Numbers Paired Puzzle Activity. Students will be able to reinforce their addition and subtraction skills with unlike fractions, regrouping mixed numbers, converting improper fractions and simplifying fractions all while they work cooperatively with a partner. Students will be paired with a partner, and each will have 12 separate problems to solve for. After finding t
6th - 7th
Basic Operations, Fractions, Math
CCSS
5.NF.A.1
After Testing Brain Reset Slides | Calm Routine & Review | K–2
🌿 Bring Calm, Focus, and Structure Back After Testing Season! Struggling with restless, unfocused students after state testing? This no-prep digital slide deck is designed specifically for K–2 classrooms to help students reset, refocus, and re-engage during the post-testing slump. With a predictable routine, calming visuals, and quick skill reviews, this resource helps you regain classroom flow—without extra planning or stress. --- 🌼 What’s Included: • 27 total slides organized into easy-
K - 2nd
Basic Operations, Phonics & Phonological Awareness, Social Emotional Learning
Differentiated Word Problems Simplified Language, Visuals and Graphic Organizers
I use this set of 8 word problems with my students with IEPs to teach Operations and Algebraic Thinking. This set includes problems with unknowns in all positions, and problems that call for addition and subtraction (one or the other). I have included visuals to help with difficult words, and to draw attention to the subject of the problem, as well as what is being asked in the problem. Other visual cues include bolded numbers, and graphic organizers designed to facilitate students' understandin
K - 4th
Basic Operations, Math, Other (Math)
Deciding when to add or subtract in a word problem
Often students struggle with deciding what operation they should use to solve a word problem. This is a mixture of addition and subtraction word problems for students to practice finding key words for problem solving. It includes classwork and homework problems, as well as a quiz and a challenge problem.
2nd - 3rd
Basic Operations, Other (Math)
Score a Touchdown with Word Problems!
Use this activity to help your students practice deciding to add or subtract to solve a word problem. Recording sheet is included! Great Math Center Activity!
2nd - 5th
Basic Operations, Other (Math)
Subtraction Story Problems_Separate Result Unknown, Separate Change Unknown
I created this activity because my students needed extra practice with reading story problems and deciding for themselves which numbers to add to their number sentence and in which order. First, they practice fact families, which help with the Change Unknown problems, then they record number sentences for Result Unknown and Change Unknown problems. Students like these story problems because their names are used. This is a PPT download so that you can change the names in the story problems to fit
K - 2nd
Basic Operations, Math, Other (Math)
CCSS
1.OA.A.1
, 1.OA.B.3
, 1.OA.B.4
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