5th Grade Average Practice Problems and Worksheets

To solve this problem of finding the average of three numbers, follow these steps:

• Step 1: Find the sum of the numbers.
  We have the numbers 10, 15, and 5. First, calculate the sum:
  $10 + 15 + 5 = 30$.
• Step 2: Determine the number of terms.
  There are three numbers, so the number of terms is 3.
• Step 3: Calculate the average.
  Use the formula for average: $\text{Average} = \frac{\text{Sum of numbers}}{\text{Number of terms}}$.
  Plug in the sum and the number of terms:
  $\text{Average} = \frac{30}{3} = 10$.

Therefore, the average of the numbers 10, 15, and 5 is \textbf{\( 10 }\).

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

• Step 1: Identify the given numbers: 10, 5, and 15.
• Step 2: Apply the formula for the average.
• Step 3: Perform the calculation to find the average.

Now, let's work through each step:

Step 1: We have three numbers to consider: $10$, $5$, and $15$.

Step 2: To find the average, we use the formula:

$\text{Average} = \frac{\text{Sum of the numbers}}{\text{Number of numbers}}$

Step 3: Calculate the sum of the numbers:

$10 + 5 + 15 = 30$

Step 4: Divide the sum by the number of numbers:

The number of numbers is 3, so:

$\text{Average} = \frac{30}{3} = 10$

Therefore, the average of 10, 5, and 15 is $10$.

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: Sum the numbers
• Step 2: Divide the sum by the number of numbers

Now, let's work through each step:
Step 1: Calculate the sum of the numbers:
$1 + 11 + 3 + 1 = 16$

Step 2: Divide the sum by the total number of numbers. There are 4 numbers, so we divide 16 by 4:
$\frac{16}{4} = 4$

Therefore, the average of the numbers is $\textbf{4}$.

To solve this problem, we will calculate the average of the numbers 1, 2, and 33 using the arithmetic mean formula.

The steps to find the average are as follows:

• Step 1: Calculate the sum of the numbers: $1 + 2 + 33 = 36$.
• Step 2: Count the number of terms: There are 3 terms.
• Step 3: Find the average by dividing the sum by the number of terms: $\frac{36}{3} = 12$.

Therefore, the average of the numbers 1, 2, and 33 is $12$.

This corresponds to choice 4 in the provided options.

Thus, the solution to the problem is $12$.