The sum of first four multiples of 8 is:

Options

A. 60
B. 70
C. 80
D. 100

Answer

To find the sum of the first four multiples of 8, we can follow these steps:

### Step 1: Identify the first four multiples of 8.
The first four multiples of 8 can be calculated by multiplying 8 by the first four natural numbers (1, 2, 3, and 4).

- 1st multiple: \( 8 \times 1 = 8 \)
- 2nd multiple: \( 8 \times 2 = 16 \)
- 3rd multiple: \( 8 \times 3 = 24 \)
- 4th multiple: \( 8 \times 4 = 32 \)

### Step 2: List the multiples.
Now we have the first four multiples of 8:
- 8, 16, 24, 32

### Step 3: Add the multiples together.
Now we will add these multiples together to find their sum:
\[ 8 + 16 + 24 + 32 \]

### Step 4: Perform the addition.
Let's add them step by step:
- First, add \( 8 + 16 = 24 \)
- Next, add \( 24 + 24 = 48 \)
- Finally, add \( 48 + 32 = 80 \)

So, the total sum is:
\[ 8 + 16 + 24 + 32 = 80 \]

### Final Answer:
The sum of the first four multiples of 8 is **80**.

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