Averages for 5th Grade: Calculating the average of 2 terms

To solve this problem, we'll follow these steps:

• Step 1: Identify the given numbers, which are $1$ and $5$.
• Step 2: Apply the average formula $\frac{a + b}{2}$.
• Step 3: Perform the necessary calculations.

Let's work through each step:

Step 1: The numbers we need to average are $1$ and $5$.

Step 2: We use the formula for the average of two numbers:

$\text{Average} = \frac{a + b}{2}$

where $a = 1$ and $b = 5$.

Step 3: Plug these values into the formula:

$\text{Average} = \frac{1 + 5}{2} = \frac{6}{2} = 3$

Therefore, the average of $1$ and $5$ is $\mathbf{3}$.

To solve this problem, we'll follow these steps:

• Step 1: Identify the given information
• Step 2: Apply the appropriate formula
• Step 3: Perform the necessary calculations

Now, let's work through each step:
Step 1: We are given the numbers 10 and 12.
Step 2: We'll use the formula for the average, which is $\text{Average} = \frac{\text{Sum of the terms}}{\text{Number of terms}}$.
Step 3: Calculate the sum of 10 and 12, which is $10 + 12 = 22$.
Divide this sum by the number of terms: $\frac{22}{2} = 11$.

Therefore, the average of 10 and 12 is $11$.

To solve this problem, we'll follow these steps:

• Step 1: Identify the given numbers, which are both $6$.
• Step 2: Use the formula to calculate the average, $\frac{a + b}{2}$.
• Step 3: Perform the arithmetic calculations to find the average.

Now, let's work through each step:

Step 1: We are given the numbers $6$ and $6$.

Step 2: The formula for the average of two numbers is $\frac{a + b}{2}$. We substitute $a = 6$ and $b = 6$ into this formula.

Step 3: Plugging in our values, we calculate:

$\text{Average} = \frac{6 + 6}{2} = \frac{12}{2} = 6$

Therefore, the solution to the problem is $6$.

To solve this problem, we'll calculate the average of the two numbers provided, which are 8 and 0.

We approach this problem using the formula for the average of two numbers:

• $\text{Average} = \frac{a + b}{2}$

where $a = 8$ and $b = 0$.

Let's perform the calculations:

• Step 1: Add the two numbers: $8 + 0 = 8$.
• Step 2: Divide the sum by 2 to find the average: $\frac{8}{2} = 4$.

The average of 8 and 0 is $4$.

Therefore, the correct answer to the problem is $\textbf{4}$, which corresponds to choice 3 in the provided answer choices.

To calculate the average of the numbers 20 and 10, we will follow these steps:

• Step 1: Add the two numbers together. We have $20 + 10 = 30$.
• Step 2: Divide the sum by the number of values, which is 2. So, we have $\frac{30}{2} = 15$.

Therefore, the average of 20 and 10 is $15$.

To solve this problem, we'll follow these steps:

• Step 1: Add the two numbers.
• Step 2: Divide the sum by 2 to find the average.

Now, let's work through each step:
Step 1: Add 11 and 7. This gives $11 + 7 = 18$.
Step 2: Divide the sum by 2. Thus, the average is $\frac{18}{2} = 9$.

Therefore, the solution to the problem is $9$.

To solve this problem, we'll follow these simplified steps:

• Step 1: Add the two numbers together, 30 and 6.
• Step 2: Divide the result by 2 to find the average.

Let's perform these steps:
Step 1: Calculate the sum:
$30 + 6 = 36$
Step 2: Divide the sum by 2:
$\frac{36}{2} = 18$

Therefore, the average of 30 and 6 is $18$.

To solve this problem, we'll follow these steps:

• Step 1: Identify the given numbers, which are $2$ and $6$.
• Step 2: Use the formula for the average: $\text{Average} = \frac{\text{Sum of terms}}{\text{Number of terms}}$.
• Step 3: Calculate the sum of the numbers: $2 + 6 = 8$.
• Step 4: There are two terms, so divide the sum by 2: $\frac{8}{2} = 4$.

Now, let's work through each step:
Step 1: The given numbers are $2$ and $6$.
Step 2: Using the average formula, we find that the average is the sum of the numbers divided by the number of numbers.
Step 3: Add the numbers: $2 + 6 = 8$.
Step 4: Since there are 2 numbers, divide the sum by 2: $\frac{8}{2} = 4$.

Therefore, the answer to the problem is $4$.