This worksheet is designed to teach children how to add 10 to numbers, using visual aids (base-ten rods) and then transitioning to abstract numbers.
Each vertical rod represents
10. So:
- 1 rod = 10
- 2 rods = 20
- 3 rods = 30
- etc.
Let’s solve each problem step by step.
---
Problem 1:
Visual: 2 rods + 1 rod
→ 20 + 10 =
30
✔ Answer:
20 + 10 = 30
---
Problem 2:
Visual: 4 rods + 1 rod
→ 40 + 10 =
50
✔ Answer:
40 + 10 = 50
---
Problem 3:
Visual: 3 rods + 1 rod
→ 30 + 10 =
40
✔ Answer:
30 + 10 = 40
---
Problem 4:
Visual: 6 rods + 1 rod
→ 60 + 10 =
70
✔ Answer:
60 + 10 = 70
---
Problem 5:
Now we move to written numbers — no pictures.
-
50 + 10 = 60
-
80 + 10 = 90
-
10 + 10 = 20
-
10 + 10 = 20 *(Note: This is repeated, likely for practice)*
✔ Answers:
- 50 + 10 =
60
- 80 + 10 =
90
- 10 + 10 =
20
- 10 + 10 =
20
---
##
✔ Final Answers:
1. 20 + 10 =
30
2. 40 + 10 =
50
3. 30 + 10 =
40
4. 60 + 10 =
70
5.
50 + 10 =
60
80 + 10 =
90
10 + 10 =
20
10 + 10 =
20
---
## 💡 Teaching Tip:
This worksheet reinforces the concept that adding 10 increases the tens digit by 1, while the ones digit stays the same. For example:
- 20 → 30 (tens digit goes from 2 to 3)
- 40 → 50 (tens digit goes from 4 to 5)
It helps build number sense and prepares students for mental math!
Let me know if you’d like a printable version or more practice problems! 😊
Parent Tip: Review the logic above to help your child master the concept of addition worksheet tens and units.
