Line them up
A row of numbers, shuffled. Drag them until they run smallest to largest. They will not look alike — 0.7, three quarters and −2 all have to find their place in the same row.
Which numbers
How many rows
Put them in order
Smallest Largest
Drag a card, or use the keyboard: ← → to move along the row, Enter to pick a card up, ← → to carry it, Enter to put it down. Esc puts it back.
Every row in order
On paper too — Ordering numbers