Let's solve each of the decimal addition and subtraction problems step by step.
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Row 1
1. $ 46.38 - 43.15 = 3.23 $
(46.38 - 43.15 = 3.23)
2. $ 19.54 + 98.37 = 117.91 $
(19.54 + 98.37 = 117.91)
3. $ 18.16 + 48.74 = 66.90 $
(18.16 + 48.74 = 66.90)
4. $ 88.14 + 52.28 = 140.42 $
(88.14 + 52.28 = 140.42)
5. $ 61.45 - 18.89 = 42.56 $
(61.45 - 18.89 = 42.56)
6. $ 82.43 + 41.71 = 124.14 $
(82.43 + 41.71 = 124.14)
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Row 2
7. $ 67.99 - 20.16 = 47.83 $
(67.99 - 20.16 = 47.83)
8. $ 72.31 - 57.73 = 14.58 $
(72.31 - 57.73 = 14.58)
9. $ 91.84 + 23.38 = 115.22 $
(91.84 + 23.38 = 115.22)
10. $ 42.44 + 66.24 = 108.68 $
(42.44 + 66.24 = 108.68)
11. $ 23.53 + 42.76 = 66.29 $
(23.53 + 42.76 = 66.29)
12. $ 98.62 - 52.31 = 46.31 $
(98.62 - 52.31 = 46.31)
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Row 3
13. $ 65.75 - 55.91 = 9.84 $
(65.75 - 55.91 = 9.84)
14. $ 40.74 + 17.38 = 58.12 $
(40.74 + 17.38 = 58.12)
15. $ 22.13 + 58.51 = 80.64 $
(22.13 + 58.51 = 80.64)
16. $ 84.47 - 70.84 = 13.63 $
(84.47 - 70.84 = 13.63)
17. $ 62.97 - 51.27 = 11.70 $
(62.97 - 51.27 = 11.70)
18. $ 12.92 + 32.53 = 45.45 $
(12.92 + 32.53 = 45.45)
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Row 4
19. $ 83.84 - 65.13 = 18.71 $
(83.84 - 65.13 = 18.71)
20. $ 58.82 + 66.25 = 125.07 $
(58.82 + 66.25 = 125.07)
21. $ 49.53 - 31.24 = 18.29 $
(49.53 - 31.24 = 18.29)
22. $ 97.49 - 81.84 = 15.65 $
(97.49 - 81.84 = 15.65)
23. $ 25.95 + 44.81 = 70.76 $
(25.95 + 44.81 = 70.76)
24. $ 65.42 - 60.96 = 4.46 $
(65.42 - 60.96 = 4.46)
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✔ Final Answers:
Here are all the answers in order:
1. 3.23
2. 117.91
3. 66.90
4. 140.42
5. 42.56
6. 124.14
7. 47.83
8. 14.58
9. 115.22
10. 108.68
11. 66.29
12. 46.31
13. 9.84
14. 58.12
15. 80.64
16. 13.63
17. 11.70
18. 45.45
19. 18.71
20. 125.07
21. 18.29
22. 15.65
23. 70.76
24. 4.46
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📝 Explanation:
- We aligned decimals carefully.
- For
addition, we added the numbers directly, keeping track of decimal places.
- For
subtraction, we subtracted the smaller number from the larger one, ensuring proper alignment.
- All results are rounded to two decimal places as needed (no rounding was required since the operations naturally gave two decimal digits).
Let me know if you'd like this formatted into a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of adding and subtracting decimals worksheet 7th grade.