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Treasure Sums - Lumio addition and subtraction math games for kids

iPhone / iPad
  • Games
  • Education
  • Educational
  • Puzzle
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Ahoy landlubbers! Can you solve the number puzzles and discover the lost treasures of Lima?

A great teaching resource for Common Core classrooms, Treasure Sums features satisfying visual math puzzles that boost problem-solving skills while improving fluency with addition and subtraction. Learners follow structured learning pathways, unlocking episodes of a true pirate legend as they learn.

Aarrrgh, keep your wits about you to uncover these mathematical riches!

√ 120 interactive problems across 3 episodes
√ Targeted for 3rd-4th Grade (age 8-10)
√ Access 30% of the app for free
√ 1 in-app purchase to unlock full app
√ No third-party ads
√ Meets Common Core Standards
√ Smart hints and instructional support for each problem

Treasure Sums provides students with a full grasp of the underlying concepts of addition and subtraction strategies before opportunities for practice and building fluency. Each episode offers richly instructional learning pathways, practice pathways and fun timed challenges. Building blocks of concepts are introduced step-by-step with plenty of reinforcement to provide a deeper level of understanding.

Students are fully supported with tailored instructional supports, animated explanations and voice over for every problem. Each episode unlocks chapters of an awesome animated story of adventure on the high seas!

Episode 1. Shape Sums
Mix, match, and jumble the numbers until each shape is equal to the same amount. Practice your addition facts and flex your thinking skills as the shape designs get trickier and the numbers go up to 1000!

Episode 2. Treasure Paths
Follow the pirate clues to navigate these number grids! Use your associative and commutative skills to figure out the correct combinations. Will you find the treasure?

Episode 3. Subtract Jewels
In this final quest, you will build keen problem-solving and deduction skills as you subtract within 1000. Remember your subtraction facts and put your thinking cap on! Aaargh, not for the faint of heart.

Students learn to add and subtract numbers within 1000 fluently, accurately, efficiently (using a reasonable amount of steps and time), and flexibly using a variety of strategies beyond the standard algorithms.
* Apply mental addition and subtraction strategies
* Verify an answer using inverse operations
* Use place value algorithms and strategies
* Add and subtract vertically and horizontally
* Use associative and commutative properties
* Increase confidence with formal written methods
* Recall of addition and subtraction facts

CCSS.Math.Content.3.NBT.A.2 - Grade 3 Number & Operations in Base Ten
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

CCSS.Math.Content.4.NBT.B.4 - Grade 4 Number & Operations in Base Ten
Fluently add and subtract multi-digit whole numbers using the standard algorithm.

Standards For Mathematical Practice
MP1 - Make sense of problems and persevere in solving them
MP2 - Reason abstractly and quantitatively
MP4 - Model with mathematics
MP7 - Look for and make use of structure
MP8 - Look for and express regularity in repeated reasoning

Lumio's engaging mobile and web resources target tricky math topics in fun ways. The Lumio™ app provides access to all our resources in one place with a personal login. Or choose from seven classroom math apps, each teaching an individual topic.

Lumio™ classroom resources are made by a team of education experts and fully tested with teachers, kids and parents. Find out more or get in touch:

Twitter: @LumioEducation