How to write 18
Eighteen is a 1 and an 8. Draw the 8 as one smooth line that starts like an S and comes back up to close the top.
Number facts for eighteen
One more than eighteen is 19, and one less is 17. 18 is even, so 18 socks make 9 matching pairs. You can make eighteen as 17 + 1, 16 + 2, 15 + 3 or 14 + 4. It is one ten and 8 ones: a full ten-frame and 8 more. Count on from 18: 19, 20, 21. Count back: 17, 16, 15.
Eighteen in real life
Eighteen is double nine: 9 + 9. Use dominoes or two dice-pattern cards with nine dots each, and count all the dots to check. Doubles facts like this help with mental maths later.
On this page
A solid 18 with a numbered arrow comes first, then dotted copies, the word "eighteen" and an empty row to write alone. When it feels easy, try 19.