1. Let's start by understanding the problem: You want to learn about place value and value in numbers. 2. Place value refers to the position of a digit in a number, which determines its value. 3. For example, in the number $345$, the digit $3$ is in the hundreds place, $4$ is in the tens place, and $5$ is in the ones place. 4. The value of each digit is calculated by multiplying the digit by its place value. 5. So, the value of $3$ in $345$ is $3 \times 100 = 300$. 6. The value of $4$ is $4 \times 10 = 40$. 7. The value of $5$ is $5 \times 1 = 5$. 8. Therefore, the number $345$ is the sum of the values: $300 + 40 + 5$. 9. This helps us understand how each digit contributes to the total number based on its position. 10. Remember, place value is about the position, and value is the digit times its place value.