Numbers to 20 - Primary 1

After learning the 10 numbers, the next step is to learn numbers within 20. In this chapter, students learn:

• counting to 20
• comparing numbers
• ordering numbers

Numbers to 20

Since students have already learnt the first 10 numbers, it is time to learn numbers 11 to 20. 

Here are the numbers with their spelling:

11- eleven

12 - twelve

13- thirteen

14 - fourteen

15- fifteen

16- sixteen

17- seventeen

18 - eighteen

19 - nineteen

20 - twenty

Comparing numbers within 20

After learning to count to 20, students learn to compare the numbers (which number is bigger, and how much bigger; which number is smaller, and how much smaller).

Ordering numbers within 20

Now that students have learnt how to compare numbers, they learn how to order numbers. This involving arranging numbers from the greatest to the smallest, or vice versa

Suggest Spelling list

Suggested spelling list for this chapter:

• eleven
• twelve
• thirteen
• fourteen
• fifteen
• sixteen
• seventeen
• eighteen
• nineteen
• twenty
• greatest
• smallest