# Basic Arithmetic : Multiplication with Whole Numbers

## Example Questions

### Example Question #12 : Operations With Whole Numbers

What is the solution of the above equation?

Explanation:

We can see this by implementing objects.

groups of  objects

^ We can see that there are 21 objects.

### Example Question #1 : Multiplication With Whole Numbers

What is

Explanation:

.

Use a calculator to check your work if allowed, but if not, then I'd reccommend the following method, breaking the problem down into smaller pieces.

### Example Question #1 : Multiplication With Whole Numbers

Explanation:

Start with . That gives . Write the ones' place down underneath the  and the  and carry the  to the next place.

Next, do . That gives . However, remember to add the  you carried over from the previous step.

Now, write down  down next to the . Make sure the  is lined up beneath the  and  and the  is in the hundreds' place.

Now, do . Because we are multiplying using the tens' place of , you need to make sure that you write down the product of  and  in the tens' place, underneath the  from your previous answer.

Next, do . Write this product () in the hundreds' place.

Finally, add these two numbers together.

### Example Question #1 : Multiplication With Whole Numbers

What is

Explanation:

You can simplify this problem:

, and , so if you simplify those parts of the equation, you are left with .

### Example Question #21 : Basic Arithmetic

Solve for :

Explanation:

To solve this equation, follow order of operations:

First we do the calculations inside the parentheses.

Then we subtract to get our final answer.

Solve for :