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📏 Rounding on a Number Line

Guess which end the marker will slide to, then watch it move toward the closer number!

Score: 0
Streak: 0
to
42
Which number is this closer to? Guess a side, then slide the marker to find out. Type a number into either box on the line to set your own range.
5

About this game

Rounding Number Line shows rounding on a familiar number line. Students guess which end a number is closer to, then slide the marker to check. The midpoint is clearly marked so students can see why numbers round up or down.

Best for: Years 3 to 4

How to play

  1. Choose to round to the nearest ten, hundred or thousand.
  2. Guess which end the number is closer to.
  3. Slide the marker to check your guess.
  4. Tick Free Play to drag the marker anywhere and watch where it slides.

Teaching tips