Decimal addition and subtraction practice worksheet with 24 problems.

Problem Description:

The task involves performing addition and subtraction operations on decimal numbers. Each row contains a series of calculations where you need to add or subtract the given numbers from the starting value.

Solution Approach:

1. Identify the operation: For each calculation, determine whether it is an addition (`+`) or subtraction (`-`).
2. Perform the operation: Add or subtract the given number from the starting value.
3. Record the result: Write down the result of each operation.

Step-by-Step Solution:

#### Row 1:
- Starting Value: 46.38
- Operation: `- 43.15`
\[
46.38 - 43.15 = 3.23
\]
- Result: 3.23

- Starting Value: 19.54
- Operation: `+ 98.37`
\[
19.54 + 98.37 = 117.91
\]
- Result: 117.91

- Starting Value: 18.16
- Operation: `+ 48.74`
\[
18.16 + 48.74 = 66.90
\]
- Result: 66.90

- Starting Value: 88.14
- Operation: `+ 52.28`
\[
88.14 + 52.28 = 140.42
\]
- Result: 140.42

- Starting Value: 61.45
- Operation: `- 18.89`
\[
61.45 - 18.89 = 42.56
\]
- Result: 42.56

- Starting Value: 82.43
- Operation: `+ 41.71`
\[
82.43 + 41.71 = 124.14
\]
- Result: 124.14

#### Row 2:
- Starting Value: 67.99
- Operation: `- 20.16`
\[
67.99 - 20.16 = 47.83
\]
- Result: 47.83

- Starting Value: 72.31
- Operation: `- 57.73`
\[
72.31 - 57.73 = 14.58
\]
- Result: 14.58

- Starting Value: 91.84
- Operation: `+ 23.38`
\[
91.84 + 23.38 = 115.22
\]
- Result: 115.22

- Starting Value: 42.44
- Operation: `+ 66.24`
\[
42.44 + 66.24 = 108.68
\]
- Result: 108.68

- Starting Value: 23.53
- Operation: `+ 42.76`
\[
23.53 + 42.76 = 66.29
\]
- Result: 66.29

- Starting Value: 98.62
- Operation: `- 52.31`
\[
98.62 - 52.31 = 46.31
\]
- Result: 46.31

#### Row 3:
- Starting Value: 65.75
- Operation: `- 55.91`
\[
65.75 - 55.91 = 9.84
\]
- Result: 9.84

- Starting Value: 40.74
- Operation: `+ 17.38`
\[
40.74 + 17.38 = 58.12
\]
- Result: 58.12

- Starting Value: 22.13
- Operation: `+ 58.51`
\[
22.13 + 58.51 = 80.64
\]
- Result: 80.64

- Starting Value: 84.47
- Operation: `- 70.84`
\[
84.47 - 70.84 = 13.63
\]
- Result: 13.63

- Starting Value: 62.97
- Operation: `- 51.27`
\[
62.97 - 51.27 = 11.70
\]
- Result: 11.70

- Starting Value: 12.92
- Operation: `+ 32.53`
\[
12.92 + 32.53 = 45.45
\]
- Result: 45.45

#### Row 4:
- Starting Value: 83.84
- Operation: `- 65.13`
\[
83.84 - 65.13 = 18.71
\]
- Result: 18.71

- Starting Value: 58.82
- Operation: `+ 66.25`
\[
58.82 + 66.25 = 125.07
\]
- Result: 125.07

- Starting Value: 49.53
- Operation: `- 31.24`
\[
49.53 - 31.24 = 18.29
\]
- Result: 18.29

- Starting Value: 97.49
- Operation: `- 81.84`
\[
97.49 - 81.84 = 15.65
\]
- Result: 15.65

- Starting Value: 25.95
- Operation: `+ 44.81`
\[
25.95 + 44.81 = 70.76
\]
- Result: 70.76

- Starting Value: 65.42
- Operation: `- 60.96`
\[
65.42 - 60.96 = 4.46
\]
- Result: 4.46

Final Results:

\[
\begin{array}{cccccc}
\text{Row 1:} & 3.23 & 117.91 & 66.90 & 140.42 & 42.56 & 124.14 \\
\text{Row 2:} & 47.83 & 14.58 & 115.22 & 108.68 & 66.29 & 46.31 \\
\text{Row 3:} & 9.84 & 58.12 & 80.64 & 13.63 & 11.70 & 45.45 \\
\text{Row 4:} & 18.71 & 125.07 & 18.29 & 15.65 & 70.76 & 4.46 \\
\end{array}
\]

Final Answer:

\[
\boxed{
\begin{array}{cccccc}
3.23 & 117.91 & 66.90 & 140.42 & 42.56 & 124.14 \\
47.83 & 14.58 & 115.22 & 108.68 & 66.29 & 46.31 \\
9.84 & 58.12 & 80.64 & 13.63 & 11.70 & 45.45 \\
18.71 & 125.07 & 18.29 & 15.65 & 70.76 & 4.46 \\
\end{array}
}
\]