Averages for 5th Grade: Finding the sum given the average and number of terms

To calculate the total number of animals in the zoo, we need to follow these steps:

• Step 1: Identify the given average number of animals per cage, which is $3$.
• Step 2: Identify the total number of cages, which is $10$.
• Step 3: Use the formula for total calculation: $\text{Total} = \text{Average} \times \text{Number of cages}$.

Now, applying the formula:
$\text{Total} = 3 \times 10 = 30$

Therefore, the total number of animals in all cages at the zoo is $30$.

To solve this problem, we'll apply the concept of the average:

• Step 1: Identify the given information. The average number of pens in each bag is $4$ and there are $5$ bags.
• Step 2: Use the formula for the total sum based on the average: $\text{Total Sum} = \text{Average} \times \text{Number of Terms}$.
• Step 3: Substitute the given values into the formula: $\text{Total Sum} = 4 \times 5$.
• Step 4: Perform the multiplication: $4 \times 5 = 20$.

Therefore, the total number of pens Roni has is $20$.

To solve this problem, we'll begin by applying the steps outlined previously.

• Step 1: Identify the given information. We know that there are 5 halls in the sports center, and the average number of seats per hall is 30.
• Step 2: Use the formula for calculating the total from an average. The formula is:

$\text{Total} = \text{Average} \times \text{Number of Halls}$

• Step 3: Plug in the given values into the formula. We have:

$\text{Total} = 30 \times 5$

Calculate the result:

• Perform the multiplication: $30 \times 5 = 150$.

Therefore, the total number of seats in the sports center is $150$.

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

• Step 1: Determine the number of streets.
• Step 2: Determine the average number of houses per street.
• Step 3: Calculate the total number of houses by multiplying these two values.

Now, let's work through each step:

• Step 1: The number of streets is given as 4.
• Step 2: The average number of houses per street is 20.
• Step 3: Using the formula $\text{Total number of houses} = \text{Average number of houses} \times \text{Number of streets}$, we have:

$\text{Total number of houses} = 20 \times 4 = 80$

Therefore, the solution to the problem is $80$.

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: The problem gives us 3 rooms and an average of 2 windows per room.
Step 2: We'll use the formula: $\text{Total number of windows} = (\text{Average number per room}) \times (\text{Number of rooms})$.
Step 3: Plugging in our values, we get $2 \times 3 = 6$.

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

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

• Step 1: Identify the given information: There are 12 animals, and the average number of legs is 3.
• Step 2: Use the formula for the total sum based on the average: $\text{Total Sum} = \text{Average} \times \text{Number of Terms}$.
• Step 3: Perform the calculation using the given numbers.

Now, let's work through each step:
Step 1: We know there are 12 animals and the average number of legs per animal is 3.
Step 2: We'll use the formula $\text{Total Sum} = \text{Average} \times \text{Number of Terms}$. In this context: $\text{Total Sum of legs} = 3 \times 12$.
Step 3: Calculating gives us $3 \times 12 = 36$.

Therefore, the total number of legs that all the animals in the zoo have is $36$.

To solve this problem, we'll proceed as follows:

• Step 1: Use the formula for finding the total number of employees based on the average and the number of shops.
• Step 2: Substitute the values given in the problem into the formula.
• Step 3: Perform the multiplication to find the total number of employees.

Now, let's implement these steps:
Step 1: The formula used is: Total employees = Average number of employees per shop $\times$ Number of shops.
Step 2: Substitute the given values: Total employees = $5 \times 20$.
Step 3: Calculate the result: $5 \times 20 = 100$.

Therefore, the total number of employees in the shopping mall is $100$.

To solve this problem, we will follow a series of logical steps:

• Step 1: Identify the given information
• Step 2: Convert the mixed number to a decimal or improper fraction
• Step 3: Use the appropriate formula to calculate the total number of boxes

Let's work through these steps:

Step 1: We know there are 10 shelves and the average number of boxes per shelf is $6\frac{1}{2}$.

Step 2: Convert $6\frac{1}{2}$ to an improper fraction or decimal for calculation. As an improper fraction, it becomes $\frac{13}{2}$, and as a decimal, it is $6.5$.

Step 3: Using the formula:

$\text{Total number of boxes} = \text{Average} \times \text{Number of shelves}$

Substituting the values, we get:

$\text{Total number of boxes} = 6.5 \times 10$

Perform the multiplication:

$6.5 \times 10 = 65$

Therefore, the total number of boxes in the warehouse is $65$.