Problem: Solve the subtraction problems in the worksheet.
#### Worksheet Problems:
```
13 - 10 = __ 16 - 14 = __ 14 - 5 = __
10 - 4 = __ 8 - 8 = __ 16 - 2 = __
16 - 13 = __ 16 - 15 = __ 10 - 1 = __
20 - 17 = __ 14 - 14 = __ 14 - 12 = __
14 - 11 = __ 11 - 6 = __ 7 - 4 = __
6 - 6 = __ 6 - 1 = __ 13 - 12 = __
18 - 1 = __ 8 - 3 = __ 16 - 6 = __
15 - 3 = __ 14 - 9 = __ 9 - 9 = __
```
#### Solution:
1.
First Row:
- \( 13 - 10 = 3 \)
- \( 16 - 14 = 2 \)
- \( 14 - 5 = 9 \)
2.
Second Row:
- \( 10 - 4 = 6 \)
- \( 8 - 8 = 0 \)
- \( 16 - 2 = 14 \)
3.
Third Row:
- \( 16 - 13 = 3 \)
- \( 16 - 15 = 1 \)
- \( 10 - 1 = 9 \)
4.
Fourth Row:
- \( 20 - 17 = 3 \)
- \( 14 - 14 = 0 \)
- \( 14 - 12 = 2 \)
5.
Fifth Row:
- \( 14 - 11 = 3 \)
- \( 11 - 6 = 5 \)
- \( 7 - 4 = 3 \)
6.
Sixth Row:
- \( 6 - 6 = 0 \)
- \( 6 - 1 = 5 \)
- \( 13 - 12 = 1 \)
7.
Seventh Row:
- \( 18 - 1 = 17 \)
- \( 8 - 3 = 5 \)
- \( 16 - 6 = 10 \)
8.
Eighth Row:
- \( 15 - 3 = 12 \)
- \( 14 - 9 = 5 \)
- \( 9 - 9 = 0 \)
#### Final Answers:
```
13 - 10 = 3 16 - 14 = 2 14 - 5 = 9
10 - 4 = 6 8 - 8 = 0 16 - 2 = 14
16 - 13 = 3 16 - 15 = 1 10 - 1 = 9
20 - 17 = 3 14 - 14 = 0 14 - 12 = 2
14 - 11 = 3 11 - 6 = 5 7 - 4 = 3
6 - 6 = 0 6 - 1 = 5 13 - 12 = 1
18 - 1 = 17 8 - 3 = 5 16 - 6 = 10
15 - 3 = 12 14 - 9 = 5 9 - 9 = 0
```
Explanation:
-
Subtraction Basics: Subtraction involves taking one number away from another. The result is the difference between the two numbers.
-
Step-by-Step Approach: For each problem, identify the minuend (the number being subtracted from) and the subtrahend (the number being subtracted). Then, calculate the difference.
-
Zero Cases: When a number is subtracted from itself, the result is always 0 (e.g., \( 8 - 8 = 0 \)).
-
Borrowing: None of these problems require borrowing since they are all single-digit or simple double-digit subtractions.
Final Answer:
\[
\boxed{
\begin{array}{ccc}
13 - 10 = 3 & 16 - 14 = 2 & 14 - 5 = 9 \\
10 - 4 = 6 & 8 - 8 = 0 & 16 - 2 = 14 \\
16 - 13 = 3 & 16 - 15 = 1 & 10 - 1 = 9 \\
20 - 17 = 3 & 14 - 14 = 0 & 14 - 12 = 2 \\
14 - 11 = 3 & 11 - 6 = 5 & 7 - 4 = 3 \\
6 - 6 = 0 & 6 - 1 = 5 & 13 - 12 = 1 \\
18 - 1 = 17 & 8 - 3 = 5 & 16 - 6 = 10 \\
15 - 3 = 12 & 14 - 9 = 5 & 9 - 9 = 0 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of first grade subtraction worksheet.