Hidden Sums
A word search where the words are math
Each round gives you a target number and a chalkboard full of digits and signs. Hidden in the grid are lines that add, take away, multiply or divide to make the target. Drag across one to loop it in chalk, and find them all to finish the round.
Why kids like it
One sign at a time
The first rounds use only +. Then − joins in, then ×, then ÷. Grids grow from 7×7 to 10×10 and targets climb from 50 to 1000.
Stars and badges
Up to three stars a round, and a badge for every chapter of ten rounds. Two hundred rounds to explore.
Hints, not answers
A hint shows the first character of an answer, then where it starts. The finding is still up to you.
For the whole family
Easy, Medium and Hard answer lists: from seeing every answer's length to finding them with no clues at all.
Why parents like it
No ads, ever
No ads, no accounts, no tracking. The app collects no data at all. Privacy policy.
Try it free
The first 30 rounds are free. One purchase unlocks all 200, plus every round added in updates. It's behind a parental gate, and Family Sharing covers the whole family.
Real math practice
Mental arithmetic, number sense, and the order of operations (× and ÷ before + and −), disguised as a treasure hunt.