Cardinal Numbers (Single-digit numbers)

(N.B. O (zero) is not a number)

Flashcards
Exercise by Dr Michael A. Riccioli (October 2025)

Flash Cards
You have a pile of cards.
a) Click NEXT to see card 1 (0).
b) Click NEXT again to see card 2 (the number in letters) (zero).
Repeat (a) and (b) as many times as you wish.
When you have memorised a pair of cards, click DELETE to make sides 1 and 2 of the selected card(s) to disappear from the pile.

0zero
1one
2two
3three
4four
5five
6six
7seven
8eight
9nine