Let’s solve each problem step by step.
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Vertical Addition Problems (top to bottom, left to right):
1.
2.34 + 1.07
- Add hundredths: 4 + 7 = 11 → write 1, carry 1
- Add tenths: 3 + 0 + 1 (carry) = 4
- Add ones: 2 + 1 = 3
→
3.41
2.
8.19 + 2.11
- Hundredths: 9 + 1 = 10 → write 0, carry 1
- Tenths: 1 + 1 + 1 = 3
- Ones: 8 + 2 = 10
→
10.30 (or just 10.3)
3.
3.90 + 4.23
- Hundredths: 0 + 3 = 3
- Tenths: 9 + 2 = 11 → write 1, carry 1
- Ones: 3 + 4 + 1 = 8
→
8.13
4.
5.52 + 1.88
- Hundredths: 2 + 8 = 10 → write 0, carry 1
- Tenths: 5 + 8 + 1 = 14 → write 4, carry 1
- Ones: 5 + 1 + 1 = 7
→
7.40 (or 7.4)
5.
5.14 + 6.76
- Hundredths: 4 + 6 = 10 → write 0, carry 1
- Tenths: 1 + 7 + 1 = 9
- Ones: 5 + 6 = 11
→
11.90 (or 11.9)
6.
7.09 + 2.30
- Hundredths: 9 + 0 = 9
- Tenths: 0 + 3 = 3
- Ones: 7 + 2 = 9
→
9.39
7.
8.61 + 1.11
- Hundredths: 1 + 1 = 2
- Tenths: 6 + 1 = 7
- Ones: 8 + 1 = 9
→
9.72
8.
6.92 + 3.00
- Hundredths: 2 + 0 = 2
- Tenths: 9 + 0 = 9
- Ones: 6 + 3 = 9
→
9.92
9.
7.89 + 3.38
- Hundredths: 9 + 8 = 17 → write 7, carry 1
- Tenths: 8 + 3 + 1 = 12 → write 2, carry 1
- Ones: 7 + 3 + 1 = 11
→
11.27
10.
6.03 + 6.16
- Hundredths: 3 + 6 = 9
- Tenths: 0 + 1 = 1
- Ones: 6 + 6 = 12
→
12.19
11.
1.99 + 8.50
- Hundredths: 9 + 0 = 9
- Tenths: 9 + 5 = 14 → write 4, carry 1
- Ones: 1 + 8 + 1 = 10
→
10.49
12.
4.45 + 9.27
- Hundredths: 5 + 7 = 12 → write 2, carry 1
- Tenths: 4 + 2 + 1 = 7
- Ones: 4 + 9 = 13
→
13.72
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Horizontal Addition Problems:
13.
3.42 + 2.90
- Hundredths: 2 + 0 = 2
- Tenths: 4 + 9 = 13 → write 3, carry 1
- Ones: 3 + 2 + 1 = 6
→
6.32
14.
6.55 + 1.78
- Hundredths: 5 + 8 = 13 → write 3, carry 1
- Tenths: 5 + 7 + 1 = 13 → write 3, carry 1
- Ones: 6 + 1 + 1 = 8
→
8.33
15.
4.36 + 5.63
- Hundredths: 6 + 3 = 9
- Tenths: 3 + 6 = 9
- Ones: 4 + 5 = 9
→
9.99
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Final Answer:
3.41
10.30
8.13
7.40
11.90
9.39
9.72
9.92
11.27
12.19
10.49
13.72
6.32
8.33
9.99
Parent Tip: Review the logic above to help your child master the concept of addition of decimals worksheet pdf.
