http://www.englisch-hilfen.de/en/grammar/zahlen.htm
| Ook rangtelwoorden |
| https://en.wikipedia.org/wiki/English_numerals | Volledige lijst |
| https://learnenglish.be/voc1_numbersc_study.htm | Overzichtje basis |
| https://englishlessonsbrighton.co.uk/saying-large-numbers-english/ | Britse uitspraak |
| https://www.enchantedlearning.com/languages/french/subjects/numbers.shtml | Rekentermen |
| https://www.thoughtco.com/expressing-numbers-in-english-1210097 | Am. Uitspraak van getallen |
| https://www.learnenglish.de/basics/numbers.html#say | Info, ook sommen etc. |
| https://en.wikipedia.org/wiki/Hectare | Hectare etc. |
| https://sites.rootsweb.com/~qcchatea/factors.htm | Uitgebreid en info etymologie |
| http://www.cleavebooks.co.uk/scol/ccarea.htm | Conversie tabellen |
| http://www.cleavebooks.co.uk/dictunit/dictunit1.htm | Startpunt conversie tabellen |
| http://www.englishnumber.com/math-equations/how-to-pronounce-math-equations.html | Uitspraak sommen |
| https://www.woodwardenglish.com/lesson/telephone-numbers-in-english/ | Telefoonnummers |
| https://www.youtube.com/watch?v=SIyQ1dRVjEI | Telefoonnummer video |
| |
| https://agendaweb.org/vocabulary/numbers-ordinal-exercises.html | Startpunt Ordinal numbers
(Rangtelwoorde) |
| https://www.englisch-hilfen.de/en/exercises_list/numbers_time.htm | Startpunt oefeningen met numbers, dates etc. |
| https://www.englisch-hilfen.de/en/words_list/mix.htm | Startpunt uitleg numbers, dates etc. |
| https://www.englishclub.com/vocabulary/time-date.php | Datums BE/AE |
