Free interactive math game: Rounding to tens. Part of the Rounding category on MathKite.
Taken from the generator that powers this exercise. A fresh set appears every time the page is opened, and the printable worksheet holds ten of them.
Snapping a number to the closest multiple of ten.
Picture the number standing between two neighboring multiples of ten. Whichever it stands nearer claims it — and the ones digit alone reveals which that is.
47 rounds to 50, because its ones digit 7 leans it forward, while 43 falls back to 40.
Rounding 45 down. Exactly 5 always rounds up.