Pilot a probe along the number line: glide it to an exact value, and round numbers by parking on the nearest ten or hundred — the line shows which landmark is closer.
A probe slides along the number line and must land on an exact position, or — in rounding challenges — park at whichever ten or hundred is closer, with the line making the distance visible. This builds number sense, number-line fluency, rounding to the nearest ten or hundred, and a feel for place value. A good match for Grades 2–4, or any child who rounds by rule rather than by understanding.
A free, no-signup, no-ads math game for Grades 2–4 — practising number-sense, number-line, rounding, place-value. Play in your browser on the KidsDoMath games hub or explore more Arithmetic games.
By grade level: 2nd Grade Math Games3rd Grade Math Games4th Grade Math Games
More like this: Expanded Form ExpressPlace Value ForgeEqual Groups Grove
What math does Number Line Navigator practice? Number Line Navigator practices Number Sense, Number Line, Rounding & Estimation, Place Value. A probe slides along the number line and must land on an exact position, or — in rounding challenges — park at whichever ten or hundred is closer, with the line making the distance visible.
What grade is Number Line Navigator for? Number Line Navigator is built for Grades 2–4 (ages 7–10). It sits in the Arithmetic strand, and it ramps across 8 levels so younger or older players find their own pace.
How do you play Number Line Navigator? Pilot a probe along the number line: glide it to an exact value, and round numbers by parking on the nearest ten or hundred — the line shows which landmark is closer.
Is Number Line Navigator free to play? Yes. Number Line Navigator is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.