Maths under the sea · For iPhone

Mermaid Maths

Little sums. Big underwater adventures.

Turn addition practice into a treasure hunt. Find the right answer bubble, swim with your mermaid, and earn treasure to make the ocean your own.

An addition question and answer bubbles above bright underwater ruins, with a mermaid ready to swim
A little thinking. A little swimming. A sea of discovery.

Correct answer? +1 treasure!

AdditionPractice through play
8Underwater backgrounds
2Mermaids to choose from
6Sea friends to join you

Think. Tap. Swim.

Every answer is a little adventure.

Simple controls bring addition practice to life beneath the waves.

Solve the sum

Look at the addition question at the top of the scene. Take a moment to work out your answer.

Choose your bubble

Find the bubble with your answer and give it a tap. Your mermaid will swim to the bubble you choose.

Earn treasure

Each correct answer earns one treasure. Spend it on different backgrounds, mermaids, and underwater friends.

Correct answers earn 1 treasure. Incorrect answers lose 1 treasure.

The shop with two mermaids and six sea friends, including sharks, fish, a crab, and a jellyfish
A mermaid of your own. A few new friends for the journey.

Treasure worth swimming for

Make the ocean your own.

Put your hard-earned treasure to work. Choose between two mermaids and add up to six different sea friends to keep you company while you practice.

  • 2 mermaids
  • 6 sea friends
  • Earned through practice
Eight selectable ocean backgrounds, from sunlit underwater ruins to colorful caverns and kelp forests
Eight different settings for your next underwater adventure.

A change of sea-nery

Same little sums.
A whole new view.

Swim among sunlit ruins, explore mysterious caverns, or settle into an underwater forest. Use treasure to change between eight backgrounds and give your next practice session a fresh setting.

  • 8 underwater settings
  • Choose your favorite

Your next adventure adds up

Ready to make a splash with addition?

Pick your mermaid. Find your answer. See where a little practice takes you.