Make decimal addition exciting with our Decimal Addition World of Adventure Worksheets. These code breaker activities transform standard algorithm practise into a goal-driven challenge where students uncover hidden items to build their very own world of adventure. With colourful maps, mystery reveals and targeted skill development, this resource makes decimal work engaging, purposeful and fun.

Students begin by solving a set of decimal addition equations using vertical algorithm strategies. After completing the problems, they use their answers to decode a secret item using the provided number-to-letter code. The item is an attraction or amenity they can add to their world of adventure. With every worksheet they complete, students collect more features for their world, motivating continued effort and encouraging mastery of key skills.

This resource includes three differentiated worksheet versions. The first version includes decimal addition problems that do not require regrouping, the second includes some regrouping, and the third focuses mostly on regrouping. Each version builds fluency and confidence in a scaffolded way, making it perfect for both revision and extension. A recording and planning sheet is also included to help students track their progress and creatively plan out their adventure world.

Key Learning Outcomes:

• ✅ Solve decimal addition problems using vertical algorithm strategies
• ✅ Practise place value alignment with tenths and hundredths
• ✅ Apply regrouping strategies when required
• ✅ Use answers to decode mystery items using a number-to-letter code
• ✅ Build motivation and engagement through personalised world-building

What’s Included:

• 3 differentiated decimal addition worksheets:
  • - Version 1: no regrouping
  • - Version 2: some regrouping
  • - Version 3: mostly regrouping
• Code key for decoding secret attractions or amenities
• Recording and planning sheet for creating a personalised world of adventure

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 worksheet version appropriate to your students’ learning level.
2. Students solve each vertical decimal addition problem, showing their working.
3. They use the number-to-letter code to reveal a mystery item based on their answers.
4. Students record the item on their planning sheet and add it to their growing world of adventure.
5. Continue across the series for cumulative skill development and world-building fun.

Ideas for Classroom Use:

• 💡 Use during a maths rotation focused on decimal operations
• 💡 Assign different versions for targeted differentiation
• 💡 Use as a motivating early finisher task or fluency builder
• 💡 Encourage peer collaboration during the decoding process
• 💡 Display completed worlds or maps on your classroom maths wall

Top Teacher Tips:

• 💛 Model how to align decimal points correctly for accurate vertical addition
• 💛 Print planning sheets in A3 to give students more room for creative design
• 💛 Use the decoded items as prompts for extension writing or storytelling
• 💛 Track student progress by noting which items have been unlocked in the series

Decimal Addition World of Adventure Worksheets combine targeted algorithm practise with creativity and game-based challenge. With built-in differentiation, imaginative engagement, and opportunities for cross-curricular connection, this resource brings your maths sessions to life.