Grade 3 Addition Worksheets | Free Worksheets | Printables - Free Printable
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Show Answer Key & Explanations
Step-by-step solution for: Grade 3 Addition Worksheets | Free Worksheets | Printables
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Show Answer Key & Explanations
Step-by-step solution for: Grade 3 Addition Worksheets | Free Worksheets | Printables
Let’s solve each addition problem step by step. We’ll add the numbers column by column, starting from the right (ones place), and carry over if needed.
---
Problem 1: 63 + 84
Ones: 3 + 4 = 7
Tens: 6 + 8 = 14 → write down 4, carry 1 to hundreds → but since it’s two-digit, we just write 14 in tens? Wait — no, actually:
Better way:
63
+84
----
Start with ones: 3 + 4 = 7
Tens: 6 + 8 = 14 → so total is 147? No — wait, 60 + 80 = 140, plus 7 = 147? That can’t be right because 63 + 84 should be less than 200. Let me recalculate:
Actually:
63 + 84
= (60 + 80) + (3 + 4)
= 140 + 7 = 147
Wait — that’s correct! But let’s do vertical addition properly:
```
63
+ 84
-----
147
```
Yes, 3+4=7, 6+8=14 → write 4, carry 1 → but since there’s no hundreds digit, we write 14 in front → so 147. Correct.
But hold on — this is Grade 3, and these are all two-digit additions. The maximum sum would be 99 + 99 = 198, which is three digits. So yes, some answers will have three digits.
Let me redo carefully for each:
---
I’ll go one by one, calculating accurately.
1. 63 + 84
3 + 4 = 7
6 + 8 = 14 → so answer is 147
2. 44 + 97
4 + 7 = 11 → write 1, carry 1
4 + 9 = 13, plus carried 1 = 14 → so 141
Check: 44 + 97 = 44 + 100 - 3 = 144 - 3 = 141 ✓
3. 88 + 94
8 + 4 = 12 → write 2, carry 1
8 + 9 = 17, plus 1 = 18 → 182
Check: 88 + 94 = 90 + 94 - 2 = 184 - 2 = 182 ✓
4. 56 + 73
6 + 3 = 9
5 + 7 = 12 → 129
5. 87 + 76
7 + 6 = 13 → write 3, carry 1
8 + 7 = 15, plus 1 = 16 → 163
6. 68 + 37
8 + 7 = 15 → write 5, carry 1
6 + 3 = 9, plus 1 = 10 → 105
7. 26 + 84
6 + 4 = 10 → write 0, carry 1
2 + 8 = 10, plus 1 = 11 → 110
8. 42 + 99
2 + 9 = 11 → write 1, carry 1
4 + 9 = 13, plus 1 = 14 → 141
9. 47 + 35
7 + 5 = 12 → write 2, carry 1
4 + 3 = 7, plus 1 = 8 → 82
10. 64 + 77
4 + 7 = 11 → write 1, carry 1
6 + 7 = 13, plus 1 = 14 → 141
11. 93 + 35
3 + 5 = 8
9 + 3 = 12 → 128
12. 66 + 73
6 + 3 = 9
6 + 7 = 13 → 139
13. 55 + 49
5 + 9 = 14 → write 4, carry 1
5 + 4 = 9, plus 1 = 10 → 104
14. 73 + 96
3 + 6 = 9
7 + 9 = 16 → 169
15. 48 + 58
8 + 8 = 16 → write 6, carry 1
4 + 5 = 9, plus 1 = 10 → 106
16. 38 + 87
8 + 7 = 15 → write 5, carry 1
3 + 8 = 11, plus 1 = 12 → 125
17. 97 + 97
7 + 7 = 14 → write 4, carry 1
9 + 9 = 18, plus 1 = 19 → 194
18. 86 + 49
6 + 9 = 15 → write 5, carry 1
8 + 4 = 12, plus 1 = 13 → 135
19. 35 + 48
5 + 8 = 13 → write 3, carry 1
3 + 4 = 7, plus 1 = 8 → 83
20. 46 + 69
6 + 9 = 15 → write 5, carry 1
4 + 6 = 10, plus 1 = 11 → 115
---
Now, let’s list them clearly:
1. 147
2. 141
3. 182
4. 129
5. 163
6. 105
7. 110
8. 141
9. 82
10. 141
11. 128
12. 139
13. 104
14. 169
15. 106
16. 125
17. 194
18. 135
19. 83
20. 115
Double-check a few random ones:
- #9: 47 + 35 = 82 → 40+30=70, 7+5=12 → 70+12=82 ✓
- #19: 35 + 48 = 83 → 30+40=70, 5+8=13 → 70+13=83 ✓
- #20: 46 + 69 = 115 → 40+60=100, 6+9=15 → 100+15=115 ✓
All look good.
Final Answer:
1. 147
2. 141
3. 182
4. 129
5. 163
6. 105
7. 110
8. 141
9. 82
10. 141
11. 128
12. 139
13. 104
14. 169
15. 106
16. 125
17. 194
18. 135
19. 83
20. 115
---
Problem 1: 63 + 84
Ones: 3 + 4 = 7
Tens: 6 + 8 = 14 → write down 4, carry 1 to hundreds → but since it’s two-digit, we just write 14 in tens? Wait — no, actually:
Better way:
63
+84
----
Start with ones: 3 + 4 = 7
Tens: 6 + 8 = 14 → so total is 147? No — wait, 60 + 80 = 140, plus 7 = 147? That can’t be right because 63 + 84 should be less than 200. Let me recalculate:
Actually:
63 + 84
= (60 + 80) + (3 + 4)
= 140 + 7 = 147
Wait — that’s correct! But let’s do vertical addition properly:
```
63
+ 84
-----
147
```
Yes, 3+4=7, 6+8=14 → write 4, carry 1 → but since there’s no hundreds digit, we write 14 in front → so 147. Correct.
But hold on — this is Grade 3, and these are all two-digit additions. The maximum sum would be 99 + 99 = 198, which is three digits. So yes, some answers will have three digits.
Let me redo carefully for each:
---
I’ll go one by one, calculating accurately.
1. 63 + 84
3 + 4 = 7
6 + 8 = 14 → so answer is 147
2. 44 + 97
4 + 7 = 11 → write 1, carry 1
4 + 9 = 13, plus carried 1 = 14 → so 141
Check: 44 + 97 = 44 + 100 - 3 = 144 - 3 = 141 ✓
3. 88 + 94
8 + 4 = 12 → write 2, carry 1
8 + 9 = 17, plus 1 = 18 → 182
Check: 88 + 94 = 90 + 94 - 2 = 184 - 2 = 182 ✓
4. 56 + 73
6 + 3 = 9
5 + 7 = 12 → 129
5. 87 + 76
7 + 6 = 13 → write 3, carry 1
8 + 7 = 15, plus 1 = 16 → 163
6. 68 + 37
8 + 7 = 15 → write 5, carry 1
6 + 3 = 9, plus 1 = 10 → 105
7. 26 + 84
6 + 4 = 10 → write 0, carry 1
2 + 8 = 10, plus 1 = 11 → 110
8. 42 + 99
2 + 9 = 11 → write 1, carry 1
4 + 9 = 13, plus 1 = 14 → 141
9. 47 + 35
7 + 5 = 12 → write 2, carry 1
4 + 3 = 7, plus 1 = 8 → 82
10. 64 + 77
4 + 7 = 11 → write 1, carry 1
6 + 7 = 13, plus 1 = 14 → 141
11. 93 + 35
3 + 5 = 8
9 + 3 = 12 → 128
12. 66 + 73
6 + 3 = 9
6 + 7 = 13 → 139
13. 55 + 49
5 + 9 = 14 → write 4, carry 1
5 + 4 = 9, plus 1 = 10 → 104
14. 73 + 96
3 + 6 = 9
7 + 9 = 16 → 169
15. 48 + 58
8 + 8 = 16 → write 6, carry 1
4 + 5 = 9, plus 1 = 10 → 106
16. 38 + 87
8 + 7 = 15 → write 5, carry 1
3 + 8 = 11, plus 1 = 12 → 125
17. 97 + 97
7 + 7 = 14 → write 4, carry 1
9 + 9 = 18, plus 1 = 19 → 194
18. 86 + 49
6 + 9 = 15 → write 5, carry 1
8 + 4 = 12, plus 1 = 13 → 135
19. 35 + 48
5 + 8 = 13 → write 3, carry 1
3 + 4 = 7, plus 1 = 8 → 83
20. 46 + 69
6 + 9 = 15 → write 5, carry 1
4 + 6 = 10, plus 1 = 11 → 115
---
Now, let’s list them clearly:
1. 147
2. 141
3. 182
4. 129
5. 163
6. 105
7. 110
8. 141
9. 82
10. 141
11. 128
12. 139
13. 104
14. 169
15. 106
16. 125
17. 194
18. 135
19. 83
20. 115
Double-check a few random ones:
- #9: 47 + 35 = 82 → 40+30=70, 7+5=12 → 70+12=82 ✓
- #19: 35 + 48 = 83 → 30+40=70, 5+8=13 → 70+13=83 ✓
- #20: 46 + 69 = 115 → 40+60=100, 6+9=15 → 100+15=115 ✓
All look good.
Final Answer:
1. 147
2. 141
3. 182
4. 129
5. 163
6. 105
7. 110
8. 141
9. 82
10. 141
11. 128
12. 139
13. 104
14. 169
15. 106
16. 125
17. 194
18. 135
19. 83
20. 115
Parent Tip: Review the logic above to help your child master the concept of printable math worksheets addition 3rd grade.
