Daily Math & Sum Pairs

Practise mental arithmetic, match sum pairs and track accuracy across daily runs. For adults practising and parents playing with children.

ARITHMETIC AND SUM PAIRS • Mental arithmetic: 36 levels, each with 50 familiar questions. The first four groups use addition and subtraction; the last two introduce simple multiplication and exact division. Each level has a fixed question set for repeat practice. Correct input advances automatically, with a time limit per question. • Sum pairs: tap two numbers that add up to the target within a 90-second run. A wrong pair removes 3 seconds. • See accuracy, time, the previous completed run and personal bests. Arithmetic scores count correct answers; pair scores measure the correct-pair ratio. Speed is shown separately. Pair records require the displayed minimum correct-pair count and an uninterrupted run.

PARENTS PLAYING WITH CHILDREN Play addition, subtraction and number merging with large touch controls. Children earn coins through practice and use them to unlock collection cards. Parents choose lessons, questions per run, practice goals and card costs.

180 DISCOVERY CARDS Five collections with 36 cards each: Nature, Animals, Vehicles, Aircraft and Ocean. Tap a card to see its picture and flip it for two short facts in Vietnamese or English. Unopened cards keep their pictures secret. Coins are earned in the game and cannot be bought with real money.

FOR PHONES AND TABLETS Vietnamese and English interfaces, touch scrolling and portrait or landscape play. The parent gate protects settings and access to the adult area.

PLAY OFFLINE No server account is needed. Profiles, coins, cards and results stay on the device. No ads or in-app purchases. Web and native progress are not synchronised; progress does not transfer automatically between devices.

Discovery signals