Addition across ten – Grade 1
Add across ten in Grade 1: make ten first, then add the remainder. Follow worked examples and practise with questions and answers.
🎯 What you will learn
- ✓Make 10 first
- ✓Split a number cleverly
- ✓Check the answer
💡 How it works
Learn “Addition across ten – Grade 1” in small steps: understand the method first, then practise with a worksheet or online test.
How it works
💡 Rule: make 10 first, then add what remains.
To add across ten, split one number so that you make exactly 10 first. For 8 + 7, take 2 from the 7: 8 + 2 = 10; 5 remain, so the answer is 15.
This “make ten” strategy is more reliable than counting on and later helps with addition to 100.
Start with a few questions and say each step aloud. Counters, fingers or a number line make the jump over ten visible.
🧩 See the method
✍️ Worked examples
Worked examples 1
8 + 7
- 1.Take 2 from 7.
- 2.8 + 2 = 10
- 3.5 remain: 10 + 5 = 15
✓ 15
Worked examples 2
6 + 8
- 1.Take 4 from 8.
- 2.6 + 4 = 10
- 3.4 remain: 10 + 4 = 14
✓ 14
⚠️ Common mistakes
- • Do not count both numbers at once.
- • Do not forget what remains after making 10.
📝 Try it yourself
1.
7 + 6
Show answer
13
2.
9 + 5
Show answer
14
3.
8 + 8
Show answer
16
4.
5 + 9
Show answer
14
5.
7 + 7
Show answer
14
6.
6 + 9
Show answer
15
Create matching questions
Create a compact printable worksheet or start an online test.
Learn next
FAQ
Why split 8 + 7?
Because 2 makes 10 with 8, then only 5 are left.
Must I always make ten?
No, but it is a reliable method for crossing ten.