Problem Description:
The task involves solving a series of addition and subtraction problems presented in a table format. Each row contains five problems, and the goal is to compute the results for each operation.
Solution Approach:
1.
Identify the Operations: Each cell in the table contains either an addition (`+`) or subtraction (`-`) operation.
2.
Perform Calculations: For each problem, perform the specified arithmetic operation (addition or subtraction) using the given numbers.
3.
Record Results: Write down the results for each calculation.
Step-by-Step Solution:
####
Row 1:
-
Problem 1: \( 2.5 + 12 \)
\[
2.5 + 12 = 14.5
\]
-
Problem 2: \( 44 + 22 \)
\[
44 + 22 = 66
\]
-
Problem 3: \( 21 + 9 \)
\[
21 + 9 = 30
\]
-
Problem 4: \( 45 + 52 \)
\[
45 + 52 = 97
\]
-
Problem 5: \( 12 + 72 \)
\[
12 + 72 = 84
\]
####
Row 2:
-
Problem 1: \( 18 + 51 \)
\[
18 + 51 = 69
\]
-
Problem 2: \( 44 + 39 \)
\[
44 + 39 = 83
\]
-
Problem 3: \( 81 + 17 \)
\[
81 + 17 = 98
\]
-
Problem 4: \( 28 + 6 \)
\[
28 + 6 = 34
\]
-
Problem 5: \( 23 + 14 \)
\[
23 + 14 = 37
\]
####
Row 3:
-
Problem 1: \( 35 + 23 \)
\[
35 + 23 = 58
\]
-
Problem 2: \( 19 + 12 \)
\[
19 + 12 = 31
\]
-
Problem 3: \( 29 + 34 \)
\[
29 + 34 = 63
\]
-
Problem 4: \( 67 - 21 \)
\[
67 - 21 = 46
\]
-
Problem 5: \( 39 - 7 \)
\[
39 - 7 = 32
\]
####
Row 4:
-
Problem 1: \( 64 - 12 \)
\[
64 - 12 = 52
\]
-
Problem 2: \( 93 - 32 \)
\[
93 - 32 = 61
\]
-
Problem 3: \( 78 - 38 \)
\[
78 - 38 = 40
\]
-
Problem 4: \( 43 - 24 \)
\[
43 - 24 = 19
\]
-
Problem 5: \( 67 - 42 \)
\[
67 - 42 = 25
\]
####
Row 5:
-
Problem 1: \( 56 - 28 \)
\[
56 - 28 = 28
\]
-
Problem 2: \( 94 - 41 \)
\[
94 - 41 = 53
\]
-
Problem 3: \( 37 - 5 \)
\[
37 - 5 = 32
\]
-
Problem 4: \( 79 - 37 \)
\[
79 - 37 = 42
\]
-
Problem 5: \( 86 - 19 \)
\[
86 - 19 = 67
\]
Final Results:
\[
\begin{array}{ccccc}
14.5 & 66 & 30 & 97 & 84 \\
69 & 83 & 98 & 34 & 37 \\
58 & 31 & 63 & 46 & 32 \\
52 & 61 & 40 & 19 & 25 \\
28 & 53 & 32 & 42 & 67 \\
\end{array}
\]
Final Answer:
\[
\boxed{
\begin{array}{ccccc}
14.5 & 66 & 30 & 97 & 84 \\
69 & 83 & 98 & 34 & 37 \\
58 & 31 & 63 & 46 & 32 \\
52 & 61 & 40 & 19 & 25 \\
28 & 53 & 32 & 42 & 67 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of kumon addition worksheet.
