Six quick questions on number bonds to 10. New every day, about two minutes.
Number Beasts turns make-ten into a puzzle game: launch a number at a beast, make exactly 10 and it pops, and the leftover keeps flying.
Get it free on the App StoreFour questions ask for the partner that makes 10. Two ask for a sum like 8 + 5, and after answering you see the make-ten-first method: 8 + 2 makes 10, with 3 left over, so 13. The streak is saved on this device only.