Problem Explanation:
The task involves solving multiplication problems and converting them into repeated addition sentences, or vice versa. The goal is to understand the relationship between multiplication and repeated addition.
Steps to Solve:
1.
Multiplication to Repeated Addition: For each multiplication problem, write it as a repeated addition sentence.
2.
Repeated Addition to Multiplication: For each repeated addition sentence, write it as a multiplication problem.
Solution:
#### 1.
Multiplication to Repeated Addition:
-
7 × 5:
- This means adding 7 five times: \( 7 + 7 + 7 + 7 + 7 \).
- Answer: \( 7 + 7 + 7 + 7 + 7 \).
-
3 × 10:
- This means adding 3 ten times: \( 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 \).
- Answer: \( 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 \).
-
5 × 8:
- This means adding 5 eight times: \( 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 \).
- Answer: \( 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 \).
-
6 × 2:
- This means adding 6 two times: \( 6 + 6 \).
- Answer: \( 6 + 6 \).
-
2 × 5:
- This means adding 2 five times: \( 2 + 2 + 2 + 2 + 2 \).
- Answer: \( 2 + 2 + 2 + 2 + 2 \).
#### 2.
Repeated Addition to Multiplication:
-
3 + 3 + 3 + 3:
- This means adding 3 four times, which is \( 3 \times 4 \).
- Answer: \( 3 \times 4 \).
-
6 + 6 + 6 + 6 + 6:
- This means adding 6 five times, which is \( 6 \times 5 \).
- Answer: \( 6 \times 5 \).
-
5 + 5 + 5:
- This means adding 5 three times, which is \( 5 \times 3 \).
- Answer: \( 5 \times 3 \).
-
10 + 10:
- This means adding 10 two times, which is \( 10 \times 2 \).
- Answer: \( 10 \times 2 \).
-
4 + 4 + 4 + 4:
- This means adding 4 four times, which is \( 4 \times 4 \).
- Answer: \( 4 \times 4 \).
Final Answer:
\[
\boxed{
\begin{array}{|c|c|}
\hline
\text{MULTIPLICATION} & \text{REPEATED ADDITION} \\
\hline
7 \times 5 = & 7 + 7 + 7 + 7 + 7 \\
3 \times 10 = & 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 \\
5 \times 8 = & 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 \\
6 \times 2 = & 6 + 6 \\
2 \times 5 = & 2 + 2 + 2 + 2 + 2 \\
\hline
3 + 3 + 3 + 3 = & 3 \times 4 \\
6 + 6 + 6 + 6 + 6 = & 6 \times 5 \\
5 + 5 + 5 = & 5 \times 3 \\
10 + 10 = & 10 \times 2 \\
4 + 4 + 4 + 4 = & 4 \times 4 \\
\hline
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of worksheet on repeated addition for grade 2.
