Numbers to 20
Numbers to 20 helps children practise ordering numbers to 20, finding missing numbers, and seeing tens and ones. Read the short guide and look through the examples before choosing online practice or a printable worksheet.
How to solve this
- Count from 10 to 20 slowly at first.
- Look for the pattern: after 10 come 11, 12, 13, and so on.
- Teen numbers are one ten plus some extra ones.
Examples
Fill the gap: 13, 14, __, 16
15
How many tens and ones are in 18?
1 ten and 8 ones