Kobadoo Arithmetic

Kobadoo Arithmetic is an exciting brain-training game that challenges you to perform arithmetic operations quickly and accurately.
In each round, you’ll encounter a selection of numbers up to two digits that you’ll need to add or subtract. Your goal is to click on the correct result! With 31 levels of increasing difficulty, the game keeps you engaged while sharpening your math skills.
By playing Kobadoo Arithmetic, you’re actively exercising your working memory. Numerous scientific studies suggest that enhancing your working memory can improve cognitive function and boost overall mental performance.
Full version at Kobadoo.com