Seadog Decimal Rounding

MathPup is surrounded by pirate ships!  Round their ship's decimal number to keep MathPup safe.  No time limit in this game but you'll have to use the cannon to shoot the targets on the pirate ships.

Hold down the left mouse button or hold down your finger on touch devices to get the cannon rotating.  Release to fire the cannon at the target on the ship containing the rounded decimal answer.