Place-value blocks

Type a number from 0 to 999. The browser shows the same Dienes base-10 manipulatives the iOS app renders in AR — flats for hundreds, rods for tens, cubes for units.

Number (0–999)= 1 hundred + 4 tens + 2 ones

Hundreds × 1

Tens × 4

Units × 2

The iOS app renders these as physical Dienes base-10 blocks anchored on your desk — flats for hundreds, rods for tens, single cubes for units. When any operand is over 20 the AR view auto-promotes to this place-value display so the math stays visible.