Pin on Summer School 2019 - Free Printable
Educational worksheet: Pin on Summer School 2019. Download and print for classroom or home learning activities.
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Show Answer Key & Explanations
Step-by-step solution for: Pin on Summer School 2019
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Show Answer Key & Explanations
Step-by-step solution for: Pin on Summer School 2019
Let’s solve each addition problem step by step. Remember, we’re adding two-digit numbers and sometimes we need to regroup (carry over) when the ones add up to 10 or more.
We’ll go row by row, left to right.
---
Row 1:
1. 19 + 34
Ones: 9 + 4 = 13 → write down 3, carry 1
Tens: 1 + 3 + 1 (carried) = 5
→ 53
2. 13 + 18
Ones: 3 + 8 = 11 → write down 1, carry 1
Tens: 1 + 1 + 1 = 3
→ 31
3. 77 + 16
Ones: 7 + 6 = 13 → write down 3, carry 1
Tens: 7 + 1 + 1 = 9
→ 93
4. 54 + 36
Ones: 4 + 6 = 10 → write down 0, carry 1
Tens: 5 + 3 + 1 = 9
→ 90
5. 77 + 19
Ones: 7 + 9 = 16 → write down 6, carry 1
Tens: 7 + 1 + 1 = 9
→ 96
---
Row 2:
6. 37 + 44
Ones: 7 + 4 = 11 → write down 1, carry 1
Tens: 3 + 4 + 1 = 8
→ 81
7. 66 + 29
Ones: 6 + 9 = 15 → write down 5, carry 1
Tens: 6 + 2 + 1 = 9
→ 95
8. 32 + 28
Ones: 2 + 8 = 10 → write down 0, carry 1
Tens: 3 + 2 + 1 = 6
→ 60
9. 71 + 19
Ones: 1 + 9 = 10 → write down 0, carry 1
Tens: 7 + 1 + 1 = 9
→ 90
10. 38 + 17
Ones: 8 + 7 = 15 → write down 5, carry 1
Tens: 3 + 1 + 1 = 5
→ 55
---
Row 3:
11. 38 + 49
Ones: 8 + 9 = 17 → write down 7, carry 1
Tens: 3 + 4 + 1 = 8
→ 87
12. 72 + 19
Ones: 2 + 9 = 11 → write down 1, carry 1
Tens: 7 + 1 + 1 = 9
→ 91
13. 76 + 15
Ones: 6 + 5 = 11 → write down 1, carry 1
Tens: 7 + 1 + 1 = 9
→ 91
14. 55 + 26
Ones: 5 + 6 = 11 → write down 1, carry 1
Tens: 5 + 2 + 1 = 8
→ 81
15. 36 + 47
Ones: 6 + 7 = 13 → write down 3, carry 1
Tens: 3 + 4 + 1 = 8
→ 83
---
Row 4:
16. 41 + 49
Ones: 1 + 9 = 10 → write down 0, carry 1
Tens: 4 + 4 + 1 = 9
→ 90
17. 36 + 14
Ones: 6 + 4 = 10 → write down 0, carry 1
Tens: 3 + 1 + 1 = 5
→ 50
18. 78 + 15
Ones: 8 + 5 = 13 → write down 3, carry 1
Tens: 7 + 1 + 1 = 9
→ 93
19. 17 + 78
Ones: 7 + 8 = 15 → write down 5, carry 1
Tens: 1 + 7 + 1 = 9
→ 95
20. 74 + 19
Ones: 4 + 9 = 13 → write down 3, carry 1
Tens: 7 + 1 + 1 = 9
→ 93
---
Row 5:
21. 36 + 29
Ones: 6 + 9 = 15 → write down 5, carry 1
Tens: 3 + 2 + 1 = 6
→ 65
22. 14 + 38
Ones: 4 + 8 = 12 → write down 2, carry 1
Tens: 1 + 3 + 1 = 5
→ 52
23. 39 + 13
Ones: 9 + 3 = 12 → write down 2, carry 1
Tens: 3 + 1 + 1 = 5
→ 52
24. 48 + 45
Ones: 8 + 5 = 13 → write down 3, carry 1
Tens: 4 + 4 + 1 = 9
→ 93
25. 16 + 38
Ones: 6 + 8 = 14 → write down 4, carry 1
Tens: 1 + 3 + 1 = 5
→ 54
---
Final Answer:
Here are all the sums in order:
53, 31, 93, 90, 96,
81, 95, 60, 90, 55,
87, 91, 91, 81, 83,
90, 50, 93, 95, 93,
65, 52, 52, 93, 54
We’ll go row by row, left to right.
---
Row 1:
1. 19 + 34
Ones: 9 + 4 = 13 → write down 3, carry 1
Tens: 1 + 3 + 1 (carried) = 5
→ 53
2. 13 + 18
Ones: 3 + 8 = 11 → write down 1, carry 1
Tens: 1 + 1 + 1 = 3
→ 31
3. 77 + 16
Ones: 7 + 6 = 13 → write down 3, carry 1
Tens: 7 + 1 + 1 = 9
→ 93
4. 54 + 36
Ones: 4 + 6 = 10 → write down 0, carry 1
Tens: 5 + 3 + 1 = 9
→ 90
5. 77 + 19
Ones: 7 + 9 = 16 → write down 6, carry 1
Tens: 7 + 1 + 1 = 9
→ 96
---
Row 2:
6. 37 + 44
Ones: 7 + 4 = 11 → write down 1, carry 1
Tens: 3 + 4 + 1 = 8
→ 81
7. 66 + 29
Ones: 6 + 9 = 15 → write down 5, carry 1
Tens: 6 + 2 + 1 = 9
→ 95
8. 32 + 28
Ones: 2 + 8 = 10 → write down 0, carry 1
Tens: 3 + 2 + 1 = 6
→ 60
9. 71 + 19
Ones: 1 + 9 = 10 → write down 0, carry 1
Tens: 7 + 1 + 1 = 9
→ 90
10. 38 + 17
Ones: 8 + 7 = 15 → write down 5, carry 1
Tens: 3 + 1 + 1 = 5
→ 55
---
Row 3:
11. 38 + 49
Ones: 8 + 9 = 17 → write down 7, carry 1
Tens: 3 + 4 + 1 = 8
→ 87
12. 72 + 19
Ones: 2 + 9 = 11 → write down 1, carry 1
Tens: 7 + 1 + 1 = 9
→ 91
13. 76 + 15
Ones: 6 + 5 = 11 → write down 1, carry 1
Tens: 7 + 1 + 1 = 9
→ 91
14. 55 + 26
Ones: 5 + 6 = 11 → write down 1, carry 1
Tens: 5 + 2 + 1 = 8
→ 81
15. 36 + 47
Ones: 6 + 7 = 13 → write down 3, carry 1
Tens: 3 + 4 + 1 = 8
→ 83
---
Row 4:
16. 41 + 49
Ones: 1 + 9 = 10 → write down 0, carry 1
Tens: 4 + 4 + 1 = 9
→ 90
17. 36 + 14
Ones: 6 + 4 = 10 → write down 0, carry 1
Tens: 3 + 1 + 1 = 5
→ 50
18. 78 + 15
Ones: 8 + 5 = 13 → write down 3, carry 1
Tens: 7 + 1 + 1 = 9
→ 93
19. 17 + 78
Ones: 7 + 8 = 15 → write down 5, carry 1
Tens: 1 + 7 + 1 = 9
→ 95
20. 74 + 19
Ones: 4 + 9 = 13 → write down 3, carry 1
Tens: 7 + 1 + 1 = 9
→ 93
---
Row 5:
21. 36 + 29
Ones: 6 + 9 = 15 → write down 5, carry 1
Tens: 3 + 2 + 1 = 6
→ 65
22. 14 + 38
Ones: 4 + 8 = 12 → write down 2, carry 1
Tens: 1 + 3 + 1 = 5
→ 52
23. 39 + 13
Ones: 9 + 3 = 12 → write down 2, carry 1
Tens: 3 + 1 + 1 = 5
→ 52
24. 48 + 45
Ones: 8 + 5 = 13 → write down 3, carry 1
Tens: 4 + 4 + 1 = 9
→ 93
25. 16 + 38
Ones: 6 + 8 = 14 → write down 4, carry 1
Tens: 1 + 3 + 1 = 5
→ 54
---
Final Answer:
Here are all the sums in order:
53, 31, 93, 90, 96,
81, 95, 60, 90, 55,
87, 91, 91, 81, 83,
90, 50, 93, 95, 93,
65, 52, 52, 93, 54
Parent Tip: Review the logic above to help your child master the concept of 2nd math worksheets.
