Areas of your brain
Numbers
Number thinking is the quick mental arithmetic of combining amounts and steering toward a goal.
What these areas do
Number sense lives largely in the parietal lobe, toward the top and back of the brain. A groove along its surface called the intraparietal sulcus is commonly active when people compare amounts and do mental arithmetic. Tellingly, it sits right beside the areas that handle space, which may be why so many of us picture numbers as if they were laid out on a line in front of us. That overlap is part of what lets you estimate, hold a running total, and sense whether an answer is roughly right.
What your mind is doing in Knackle
Reaching a three-digit target from a handful of numbers asks you to plan a route, try a combination, and adjust when it overshoots. You are estimating, holding partial totals in mind, and looping back. It is a few minutes of friendly mental math, not an exam, and we never grade your ability. The point is to enjoy the puzzle and keep this kind of thinking in regular, gentle use.
Keep this kind of thinking active
This daily game gives numbers a gentle, enjoyable workout. Today’s puzzle is always free.
- Knackle Hit the target with the numbers you are dealt. Play Knackle How to play
Looking after your brain
Puzzles are one enjoyable way to stay curious and mentally active. The habits with the best evidence behind them are simple ones: good sleep, regular exercise, learning new things, staying socially connected, and looking after your heart. These games are for fun and mental exercise. They are not a treatment, a test, or a measure of your health.