Practice addition facts on screen with a deck of flash cards that works right in the browser. Each card shows a sum; tap it to flip the card over and check the answer, then move on to the next one. Nothing to print, nothing to install, and it fits a phone as easily as a laptop.
The deck is drawn fresh every time from the addition facts, so no two runs are the same. Open the practice settings to widen or narrow the numbers, or switch to a different operation, and a new deck is dealt straight away.
No. The flash cards run entirely on screen. Tap a card to flip it, use Previous and Next to move through the deck, and New deck to deal a fresh set.
Yes. The cards are built for a phone screen first - large text, a full-width card, and big Previous and Next buttons - and work just as well on a tablet or computer.
Yes. Open Change what to practice and pick the number ranges for each side of the sum. The deck is rebuilt as soon as you change a setting.