Numbers 1 to 20

Counting

Counting means saying numbers in order, one for each object.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

Number names

Tens and ones

Numbers from 10 to 20 have tens and ones.

• 13 = 1 ten and 3 ones
• 20 = 2 tens and 0 ones

Ordering

• Before: the number just before (7 comes before 8).
• After: the number just after (9 comes after 8).
• Between: 11 is between 10 and 12.

Try it

1. Count the stones in your class and write the number.
2. Write the numbers from 1 to 20 in order.