Round to the Nearest Hundred
Round to the closer hundred
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Carry the “find the closer one” instinct from tens up to hundreds. A three-digit number sits between two hundreds; Guided mode adds ten-marks to help you measure, Standard mode drops the labels, and in Challenge the number may not even be a multiple of ten. Tap the closer hundred — exactly halfway (like 350) rounds up by convention.
A three-digit number lands on the number line between two neighboring hundreds. The guided level draws ten-tick subdivisions so you can count the distance, then tap the closer hundred. Numbers exactly in the middle (like 350) round up by convention—extending rounding intuition from tens to hundreds.