Grade 2 Adding to 100 worksheet
from Gradelings · Name: ______________________
How to explain it
- Add the tens first.
- Then add the ones.
- Put the two answers together. To take away, work the same way.
Example: 34 + 25 = ? Tens: 30 + 20 = 50. Ones: 4 + 5 = 9. 50 + 9 = 59. Answer: 59
Question 1
What is 42 + 17?
- 56
- 59
- 53
59
Hint: Add the tens: 40 + 10 = 50. Add the ones: 2 + 7 = 9. Together: 59.
Question 2
What is 46 + 30?
46 + 30 = ?
- 76
- 70
- 78
76
Hint: Adding tens? Only the tens change: 4 tens + 3 tens = 7 tens.
Question 3
What is 42 + 21?
42 + 21 = ?
- 61
- 63
- 59
63
Hint: Add the tens: 40 + 20 = 60. Add the ones: 2 + 1 = 3. Together: 63.
Question 4
What is 99 − 17?
99 − 17 = ?
- 82
- 85
- 72
82
Hint: Take away the tens: 90 − 10 = 80. Take away the ones: 9 − 7 = 2.
Question 5
Ollie has 26 shells. He finds 32 more. How many shells now?
🐚26 + 32- 53
- 56
- 58
58
Hint: Add them together: 26 + 32. Add the tens, then the ones.
Question 6
What is 27 + 13?
27 + 13 = ?
- 40
- 50
- 35
40
Hint: The ones make a new ten! 7 + 3 = 10. So 30 + 10 = 40.
Question 7
What is 28 + 10?
28 + 10 = ?
- 28
- 38
- 37
38
Hint: Adding tens? Only the tens change: 2 tens + 1 tens = 3 tens.
Question 8
What is 80 − 30?
80 − 30 = ?
- 50
- 53
- 56
50
Hint: Taking away tens? Only the tens change. 80 take away 3 tens is 50.
Question 9
What is 57 + 36?
57 + 36 = ?
- 97
- 93
- 88
93
Hint: The ones make a new ten! 7 + 6 = 13. So 80 + 13 = 93.
Question 10
Ollie has 28 stickers. He gets 12 more. How many stickers now?
⭐28 + 12- 46
- 44
- 40
40
Hint: Add them together: 28 + 12. Add the tens, then the ones.
Answer key
- 1. 59
- 2. 76
- 3. 63
- 4. 82
- 5. 58
- 6. 40
- 7. 38
- 8. 50
- 9. 93
- 10. 40
Want more than 10 questions?
In Gradelings the questions change every time and adjust to your child, with hints and kind feedback.