Numbers to 20 – Grade 1
Numbers to 20 for Grade 1: order and compare numbers and find the number before or after. Explore examples and practise with answers.
🎯 What you will learn
- ✓understand the method
- ✓solve exercises independently
- ✓check the answer
💡 How it works
Learn “Numbers to 20 – Grade 1” in small steps: understand the method first, then practise with a worksheet or online test.
How it works
💡 Rule: order numbers on a number line. Left is smaller, right is greater.
Learn numbers to 20 by saying, writing and comparing them in order.
Use neighbouring numbers: before 14 is 13; after 14 is 15.
🧩 See the method
11→12→13→14→15
✍️ Worked examples
Worked examples 1
□, 14, 15
- 1.The numbers increase by 1.
- 2.Before 14 is 13.
✓ 13
Worked examples 2
18 __ 16
- 1.18 is further right.
- 2.So 18 is greater than 16.
✓ >
⚠️ Common mistakes
- • Mixing up numbers when comparing.
📝 Try it yourself
1.
Nachbar von 9
Show answer
10
2.
Vorgänger von 12
Show answer
11
3.
17 __ 19
Show answer
<
4.
15 __ 15
Show answer
=
Create matching questions
Create a compact printable worksheet or start an online test.
Learn next
FAQ
What is a predecessor?
The number directly before another number.