Let’s solve each addition problem step by step. We’ll add the numbers in each column, starting from the right (ones place), and write the answer below the line.
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1a. 25 + 3
- Ones: 5 + 3 = 8
- Tens: 2 + 0 = 2 → So, 28
1b. 35 + 4
- Ones: 5 + 4 = 9
- Tens: 3 + 0 = 3 → So, 39
1c. 12 + 1
- Ones: 2 + 1 = 3
- Tens: 1 + 0 = 1 → So, 13
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2a. 74 + 5
- Ones: 4 + 5 = 9
- Tens: 7 + 0 = 7 → So, 79
2b. 10 + 6
- Ones: 0 + 6 = 6
- Tens: 1 + 0 = 1 → So, 16
2c. 15 + 4
- Ones: 5 + 4 = 9
- Tens: 1 + 0 = 1 → So, 19
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3a. 32 + 4
- Ones: 2 + 4 = 6
- Tens: 3 + 0 = 3 → So, 36
3b. 31 + 3
- Ones: 1 + 3 = 4
- Tens: 3 + 0 = 3 → So, 34
3c. 32 + 5
- Ones: 2 + 5 = 7
- Tens: 3 + 0 = 3 → So, 37
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4a. 11 + 2
- Ones: 1 + 2 = 3
- Tens: 1 + 0 = 1 → So, 13
4b. 13 + 6
- Ones: 3 + 6 = 9
- Tens: 1 + 0 = 1 → So, 19
4c. 25 + 4
- Ones: 5 + 4 = 9
- Tens: 2 + 0 = 2 → So, 29
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5a. 32 + 7
- Ones: 2 + 7 = 9
- Tens: 3 + 0 = 3 → So, 39
5b. 65 + 4
- Ones: 5 + 4 = 9
- Tens: 6 + 0 = 6 → So, 69
5c. 18 + 1
- Ones: 8 + 1 = 9
- Tens: 1 + 0 = 1 → So, 19
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All problems are simple additions with no carrying needed — just add the ones digits and keep the tens digit as is.
Final Answer:
1a. 28
1b. 39
1c. 13
2a. 79
2b. 16
2c. 19
3a. 36
3b. 34
3c. 37
4a. 13
4b. 19
4c. 29
5a. 39
5b. 69
5c. 19
Parent Tip: Review the logic above to help your child master the concept of k5 learning math worksheets.
