Make algorithm addition exciting with our Three-Digit Add Three-Digit World of Adventure Worksheets. This engaging code breaker activity turns traditional addition practise into a fun, goal-oriented challenge. Students solve maths problems to unlock mystery items that build their very own world of adventure - a brilliant way to reinforce learning while boosting motivation and creativity.

Each worksheet begins with a series of three-digit addition problems, arranged in vertical algorithm format. After solving each problem, students use their answers to decode a secret word or item using the provided number-to-letter code. Each decoded item is an attraction or amenity they can add to their adventure world. Once revealed, students record it on the included planning sheet and begin designing their world. The more worksheets they complete, the more items they collect, encouraging ongoing effort and progress.

This resource includes three differentiated versions. Version 1 requires no regrouping, Version 2 includes some regrouping, and Version 3 focuses mostly on regrouping throughout. This makes it easy to tailor the resource to individual student needs or use as a progressive challenge over multiple lessons. Whether you use the entire series or just one worksheet at a time, your students will be excited to return to their adventure-building mission day after day.

Key Learning Outcomes:

• ✅ Solve three-digit addition equations using standard vertical algorithms
• ✅ Practise and apply regrouping strategies confidently
• ✅ Decode answers using a number-to-letter code format
• ✅ Build fluency, accuracy and number sense in a meaningful context
• ✅ Engage with creative world-building that reflects maths mastery

What’s Included:

• 3 differentiated code breaker worksheets:
  • - Version 1: no regrouping
  • - Version 2: some regrouping
  • - Version 3: mostly regrouping
• Code key for decoding mystery items
• World of Adventure planning and recording sheet
• Clear vertical layout for easy algorithm practise

Materials Needed:

• Printed worksheets and planning sheet
• Pencils or pens
• Optional: coloured pencils or markers for designing student maps

How to Use:

1. Select the appropriate worksheet version for each student or group.
2. Students complete the three-digit algorithm addition problems.
3. They use the provided code to reveal a hidden item based on their answers.
4. Students record and illustrate the item on their World of Adventure planning sheet.
5. Repeat across the series to build a full adventure world of collected items and skills.

Ideas for Classroom Use:

• 💡 Use as part of your daily maths rotations or fluency stations
• 💡 Assign specific versions to support differentiation in your addition unit
• 💡 Let students create and name new attractions as extension tasks
• 💡 Track which items students have “unlocked” to measure progress
• 💡 Display finished adventure worlds as a celebration of achievement

Top Teacher Tips:

• 💛 Print planning sheets on A3 for extra space and creativity
• 💛 Keep worksheets in levelled folders or tubs for easy student access
• 💛 Reinforce vertical alignment and place value throughout the task
• 💛 Let students pair up to check each other’s code and final design

Three-Digit Add Three-Digit World of Adventure Worksheets are the perfect blend of targeted maths practise and creative engagement. With built-in differentiation and a motivating game-like structure, this resource makes addition something your students will genuinely look forward to.