Problem: Solve the addition and subtraction problems within 10, and complete the challenge section.
#### Step 1: Solve the Addition and Subtraction Problems
We will solve each problem step by step:
1.
7 - 3 =
\( 7 - 3 = 4 \)
2.
2 + 4 =
\( 2 + 4 = 6 \)
3.
9 - 2 =
\( 9 - 2 = 7 \)
4.
1 + 5 =
\( 1 + 5 = 6 \)
5.
3 - 3 =
\( 3 - 3 = 0 \)
6.
10 - 1 =
\( 10 - 1 = 9 \)
7.
4 + 4 =
\( 4 + 4 = 8 \)
8.
2 + 5 =
\( 2 + 5 = 7 \)
9.
8 - 3 =
\( 8 - 3 = 5 \)
10.
7 + 2 =
\( 7 + 2 = 9 \)
11.
10 - 5 =
\( 10 - 5 = 5 \)
12.
3 + 4 =
\( 3 + 4 = 7 \)
13.
4 + 5 =
\( 4 + 5 = 9 \)
14.
8 - 6 =
\( 8 - 6 = 2 \)
15.
5 - 4 =
\( 5 - 4 = 1 \)
16.
7 + 3 =
\( 7 + 3 = 10 \)
17.
2 + 6 =
\( 2 + 6 = 8 \)
18.
9 - 7 =
\( 9 - 7 = 2 \)
19.
8 + 2 =
\( 8 + 2 = 10 \)
20.
7 - 0 =
\( 7 - 0 = 7 \)
21.
0 + 8 =
\( 0 + 8 = 8 \)
22.
10 - 7 =
\( 10 - 7 = 3 \)
23.
8 - 5 =
\( 8 - 5 = 3 \)
24.
3 + 6 =
\( 3 + 6 = 9 \)
#### Step 2: Complete the Challenge Section
The challenge asks to choose any 3 of the numbers from the set \{5, 9, 4, 6, 2\} to complete two equations:
1. One addition equation: \( \Box + \Box = \Box \)
2. One subtraction equation: \( \Box - \Box = \Box \)
Let's choose the numbers 5, 4, and 9.
-
Addition Equation:
\( 5 + 4 = 9 \)
-
Subtraction Equation:
\( 9 - 4 = 5 \)
#### Final Answer:
\[
\boxed{
\begin{array}{ll}
1) & 4 \\
2) & 6 \\
3) & 7 \\
4) & 6 \\
5) & 0 \\
6) & 9 \\
7) & 8 \\
8) & 7 \\
9) & 5 \\
10) & 9 \\
11) & 5 \\
12) & 7 \\
13) & 9 \\
14) & 2 \\
15) & 1 \\
16) & 10 \\
17) & 8 \\
18) & 2 \\
19) & 10 \\
20) & 7 \\
21) & 8 \\
22) & 3 \\
23) & 3 \\
24) & 9 \\
\end{array}
}
\]
\[
\text{Challenge: } 5 + 4 = 9 \quad \text{and} \quad 9 - 4 = 5
\]
Parent Tip: Review the logic above to help your child master the concept of 1st grade math worksheet addition and subtraction.
