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Dewdrop Math
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This is a Cheery Chimp original.
How To Play Dewdrop Math
Dewdrops sit on a leaf, each with a number. A drop's size shows how big its number is. Your job is to combine drops until one of them matches the target shown at the top and in the hollow in the middle of the leaf.
Combining drops
- Drag one drop onto another. When they touch, the other drop glows and holds still.
- Let go, then pick an operation: +, −, × or ÷.
- The two drops become one new drop. Tap the small ✕, or anywhere on the leaf, to let them go instead.
Watch what each operation does
- + The drops flow together into one bigger drop.
- − The smaller drop drains out of the bigger one.
- × One drop is copied, then the copies fuse together.
- ÷ A drop splits into equal shares, and you keep one share.
Take-away and sharing always use the bigger drop first, so there are no negative numbers. Drops are always whole numbers: a share that doesn't come out even, or taking away two equal drops, won't work. The game tells you why.
Finishing
- Make the target exactly and the drop slides into the hollow for three stars.
- Stuck? Tap Done and your closest drop counts. Being very close earns two stars; close earns one.
- You don't have to use every drop.
- Undo splits the last drop back apart. Reset starts the puzzle over.
- Hint shows a next step that leads to the target. A puzzle finished with a hint earns at most two stars.
Puzzle sets
- Adding, Taking Away, Times and Sharing each teach one operation. In every puzzle, the quickest way to the target uses that operation.
- Big Drops uses all four operations with bigger targets.
- Morning Dew has five new puzzles every day, getting harder as you go.
While you drag, a dashed ring around your drop shows how big the target is, so you can compare sizes by eye. You can turn it off in Settings.
Badges
- First DewdropMake a target exactly, without a hint.
- Dew CollectorMake 25 targets exactly, without hints.
- ShortcutMake a target in the fewest steps possible.
- Straight LineMake 20 targets in the fewest steps possible.
- Adding UpEarn a star on every Adding puzzle.
- DrainedEarn a star on every Taking Away puzzle.
- CopycatEarn a star on every Times puzzle.
- Fair SharesEarn a star on every Sharing puzzle.
- Big SplashEarn a star on every Big Drops puzzle.
- Morning GlowEarn 50 stars.
- Full LeafEarn 150 stars.
- Early RiserEarn a star on all five Morning Dew puzzles in one day.
- Dew Every DayEarn a star on all five Morning Dew puzzles on seven different days.
- SoakedPlay 100 puzzles.
- ???A hidden badge. Keep playing to find it.
- Contact
Feel free to contact us with any bugs, complaints, or requests.
- Release Date
- November 1, 2026
Behind the Scenes
Dewdrop Math: arithmetic you can watch
Dewdrop Math started from a puzzle format I've always liked: you're given a handful of numbers and a target, and you combine the numbers with addition, subtraction, multiplication and division until you hit it. The British TV show Countdown has run a version of this for decades, and the New York Times tried one as a daily game in 2023.
Those games are about symbols: you pick two numbers, pick an operator, and a new number appears. I wanted to see whether the same puzzle could teach what the operations mean, not just exercise them.
Size is the number
Every number in Dewdrop Math is a drop of water on a leaf, and the drop's area matches its value. A 6 holds twice as much water as a 3. Once that's true, each operation has a natural picture:
- Adding is two drops flowing together. Nothing is lost, so the new drop is exactly as big as the two put together.
- Taking away is a smaller drop draining out of a bigger one.
- Times is repeated adding made visible: 7 × 3 copies the 7 three times and fuses the copies.
- Sharing splits a drop into equal parts. When it can't be split evenly, the game says how much would be left over instead of just refusing.
The target sits in a hollow in the middle of the leaf at its true size, and a ring shows that size around whatever drop you're dragging. Before doing any arithmetic, you can see whether your biggest drop is too small or too big. That's estimation, a skill these puzzles quietly reward and classrooms rarely get time for.
Puzzles that teach one thing at a time
Every puzzle is built by a solver that tries every way of combining the starting drops. In the Adding, Taking Away, Times and Sharing sets, a puzzle only makes the cut if the quickest route to the target uses that set's operation. You can still find other routes; the lesson is just the efficient one. Puzzles get longer as a set goes on, from one step up to four.
When you finish, the game shows your steps next to the quickest solution, so there's always another way to look at the same puzzle.
Morning Dew gives everyone the same five puzzles each day, and Big Drops opens all four operations with targets in the hundreds. At that scale the drops can't all be true size on a phone screen, so sizes are gently compressed there. Bigger still means bigger; it just isn't exactly proportional.
