Addition to 20 – Grade 1
Understand addition to 20 with number bonds, making ten and free child-friendly practice. Create a free worksheet or try an online test.
🎯 What you will learn
- ✓split numbers up to 20
- ✓recognise turn-around facts
- ✓add across ten
💡 How it works
Crossing ten is easy when you first make 10 and then add the small remainder.
✍️ Worked examples
Worked examples 1
8 + 7
- 1.8 + 2 = 10
- 2.There are 5 left from 7
- 3.10 + 5 = 15
✓ 15
Worked examples 2
6 + 9
- 1.9 + 1 = 10
- 2.There are 5 left from 6
- 3.10 + 5 = 15
✓ 15
📝 Try it yourself
1.
7 + 6
Show answer
13
2.
9 + 8
Show answer
17
3.
5 + 7
Show answer
12
Create matching questions
Create a compact printable worksheet or start an online test.