Do these bicycle tubes fit my tires?
Tubes are quite forgiving, you should get away with it without much trouble.  I've seen a 24" tube survive on a 26" wheel.

Don't worry about the listed sizes, you've got an unusual wheel diameter and can't necessarily expect all tyres widths to make it onto the list. But the tube will be quite stretched (1 1/8 being smaller than 1 1/4 or 28&lt;32) so you may be marginally more likely to get a puncture than you would with a tube of the right cross section.  Probably not enough that you'd notice on the tyres you've bought though.  You might have to fiddle about a bit mounting the tube and tyre, perhaps inflating it into the tyre to get everything on the rim without pinching the tube.