Let’s solve each decimal addition problem step by step. We’ll line up the numbers by their decimal points and add them carefully, just like whole numbers — but keeping the decimal in the right place.
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Problem 1:
6.7
+1.9
+5.4
= ?
6.7 + 1.9 = 8.6
8.6 + 5.4 = 14.0 →
14.0
---
Problem 2:
7.3
+3.9
+4.9
= ?
7.3 + 3.9 = 11.2
11.2 + 4.9 = 16.1 →
16.1
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Problem 3:
9.7
+3.2
+1.3
= ?
9.7 + 3.2 = 12.9
12.9 + 1.3 = 14.2 →
14.2
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Problem 4:
7.3
+2.8
+7.3
= ?
7.3 + 2.8 = 10.1
10.1 + 7.3 = 17.4 →
17.4
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Problem 5:
1.4
+9.7
+4.4
= ?
1.4 + 9.7 = 11.1
11.1 + 4.4 = 15.5 →
15.5
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Problem 6:
8.6
+3.4
+2.7
= ?
8.6 + 3.4 = 12.0
12.0 + 2.7 = 14.7 →
14.7
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Problem 7:
9.3
+8.7
+5.5
= ?
9.3 + 8.7 = 18.0
18.0 + 5.5 = 23.5 →
23.5
---
Problem 8:
3.3
+2.3
+6.9
= ?
3.3 + 2.3 = 5.6
5.6 + 6.9 = 12.5 →
12.5
---
Problem 9:
2.5
+6.7
+9.9
= ?
2.5 + 6.7 = 9.2
9.2 + 9.9 = 19.1 →
19.1
---
Problem 10:
3.8
+2.6
+4.9
= ?
3.8 + 2.6 = 6.4
6.4 + 4.9 = 11.3 →
11.3
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Problem 11:
8.7
+2.6
+1.2
= ?
8.7 + 2.6 = 11.3
11.3 + 1.2 = 12.5 →
12.5
---
Problem 12:
1.4
+2.9
+1.6
= ?
1.4 + 2.9 = 4.3
4.3 + 1.6 = 5.9 →
5.9
---
Problem 13:
9.4
+7.5
+6.4
= ?
9.4 + 7.5 = 16.9
16.9 + 6.4 = 23.3 →
23.3
---
Problem 14:
5.2
+4.4
+7.7
= ?
5.2 + 4.4 = 9.6
9.6 + 7.7 = 17.3 →
17.3
---
Problem 15:
5.5
+6.8
+6.7
= ?
5.5 + 6.8 = 12.3
12.3 + 6.7 = 19.0 →
19.0
---
Problem 16:
6.2
+2.6
+9.4
= ?
6.2 + 2.6 = 8.8
8.8 + 9.4 = 18.2 →
18.2
---
Problem 17:
6.8
+1.5
+4.4
= ?
6.8 + 1.5 = 8.3
8.3 + 4.4 = 12.7 →
12.7
---
Problem 18:
9.2
+7.1
+3.2
= ?
9.2 + 7.1 = 16.3
16.3 + 3.2 = 19.5 →
19.5
---
Problem 19:
2.2
+4.5
+9.5
= ?
2.2 + 4.5 = 6.7
6.7 + 9.5 = 16.2 →
16.2
---
Problem 20:
8.4
+5.8
+7.1
= ?
8.4 + 5.8 = 14.2
14.2 + 7.1 = 21.3 →
21.3
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Final Answer:
14.0, 16.1, 14.2, 17.4, 15.5, 14.7, 23.5, 12.5, 19.1, 11.3, 12.5, 5.9, 23.3, 17.3, 19.0, 18.2, 12.7, 19.5, 16.2, 21.3
Parent Tip: Review the logic above to help your child master the concept of 6th math worksheet.
