Problem Description:
The task involves subtracting numbers from a given starting number (15 or less) and filling in the results in the grid. The grid already contains some subtraction problems with their solutions, but there are missing entries that need to be calculated.
Solution Approach:
1.
Identify the Structure: Each cell in the grid contains a subtraction problem of the form:
\[
\text{Starting Number} - \text{Subtracting Number}
\]
The result of each subtraction should be filled in the corresponding cell.
2.
Perform Subtraction: For each missing entry, subtract the "Subtracting Number" from the "Starting Number" and write the result in the cell.
3.
Verify Existing Entries: Ensure that the provided solutions in the grid are correct by performing the subtraction for those entries as well.
Step-by-Step Calculation:
#### Row 1:
- \( 15 - 8 = 7 \)
- \( 11 - 7 = 4 \)
- \( 14 - 6 = 8 \)
- \( 12 - 2 = 10 \)
- \( 15 - 6 = 9 \)
- \( 13 - 3 = 10 \)
#### Row 2:
- \( 10 - 8 = 2 \)
- \( 13 - 4 = 9 \)
- \( 13 - 8 = 5 \)
- \( 11 - 9 = 2 \)
- \( 15 - 5 = 10 \)
- \( 12 - 6 = 6 \)
#### Row 3:
- \( 14 - 5 = 9 \)
- \( 11 - 2 = 9 \)
- \( 13 - 6 = 7 \)
- \( 15 - 7 = 8 \)
- \( 12 - 8 = 4 \)
- \( 14 - 9 = 5 \)
#### Row 4:
- \( 11 - 8 = 3 \)
- \( 15 - 9 = 6 \)
- \( 14 - 10 = 4 \)
- \( 14 - 7 = 7 \)
- \( 12 - 7 = 5 \)
- \( 11 - 5 = 6 \)
#### Row 5:
- \( 12 - 5 = 7 \)
- \( 13 - 9 = 4 \)
- \( 14 - 8 = 6 \)
- \( 13 - 7 = 6 \)
- \( 12 - 4 = 8 \)
- \( 11 - 3 = 8 \)
#### Row 6:
- \( 13 - 10 = 3 \)
- \( 15 - 9 = 6 \)
- \( 11 - 4 = 7 \)
- \( 12 - 3 = 9 \)
- \( 15 - 10 = 5 \)
- \( 14 - 4 = 10 \)
Final Grid with Solutions:
\[
\begin{array}{|c|c|c|c|c|c|}
\hline
15 & 11 & 14 & 12 & 15 & 13 \\
\hline
-8 & -7 & -6 & -2 & -6 & -3 \\
\hline
7 & 4 & 8 & 10 & 9 & 10 \\
\hline
10 & 13 & 13 & 11 & 15 & 12 \\
\hline
-8 & -4 & -8 & -9 & -5 & -6 \\
\hline
2 & 9 & 5 & 2 & 10 & 6 \\
\hline
14 & 11 & 13 & 15 & 12 & 14 \\
\hline
-5 & -2 & -6 & -7 & -8 & -9 \\
\hline
9 & 9 & 7 & 8 & 4 & 5 \\
\hline
11 & 15 & 14 & 14 & 12 & 11 \\
\hline
-8 & -9 & -10 & -7 & -7 & -5 \\
\hline
3 & 6 & 4 & 7 & 5 & 6 \\
\hline
12 & 13 & 14 & 13 & 12 & 11 \\
\hline
-5 & -9 & -8 & -7 & -4 & -3 \\
\hline
7 & 4 & 6 & 6 & 8 & 8 \\
\hline
13 & 15 & 11 & 12 & 15 & 14 \\
\hline
-10 & -9 & -4 & -3 & -10 & -4 \\
\hline
3 & 6 & 7 & 9 & 5 & 10 \\
\hline
\end{array}
\]
Final Answer:
\[
\boxed{
\begin{array}{|c|c|c|c|c|c|}
\hline
7 & 4 & 8 & 10 & 9 & 10 \\
\hline
2 & 9 & 5 & 2 & 10 & 6 \\
\hline
9 & 9 & 7 & 8 & 4 & 5 \\
\hline
3 & 6 & 4 & 7 & 5 & 6 \\
\hline
7 & 4 & 6 & 6 & 8 & 8 \\
\hline
3 & 6 & 7 & 9 & 5 & 10 \\
\hline
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of 1st grade math facts worksheet.
