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Introduction Introduction # Multiplying Decimals

INTRO
When we multiply decimals, we think of Kamala Khan and her superhero identity, Ms. Marvel.
Kamala has shape-shifting powers, and when she needs to fight off villains to complete a mission, she can “embiggen” her fists (making them bigger) to get the job done more easily. Similarly, when we multiply decimals, we first need to “embiggen” or enlarge the decimals by moving their decimal points to the right to turn them into whole numbers. Of course, when Kamala’s done fighting, she has to shrink her fists back down to normal size.
Similarly, when we’re done multiplying…
...we have to shrink back down by moving the decimal point to the left the same number of times to undo the enlarging. Check out our
Calculator
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Lesson
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Practice

CALCULATOR

KEY STEPS

## How to Multiply Decimals

#### Step 1. Move the decimal points to the right to make whole numbers.

In order to complete our multiplication mission, we need to enlarge or “embiggen” the numbers.
Make sure to keep track of how many places the decimal moves in total.

#### Step 3. Move the decimal point back to the left.

Now that we’ve completed our multiplication mission, we need to shrink back down.
Move the decimal point the same number of times we moved it in Step 1.
LESSON
Multiplying Decimals

## Multiplying Decimals

Multiplying decimals is a lot like multiplying whole numbers. In fact, before we multiply decimals, we first need to “embiggen” or enlarge them by moving the decimal point to the right until they are whole numbers! Keep track of how many times you move the decimal point - in this case, we moved it times. Now that our numbers are whole numbers, we can just multiply them:But we're not done yet - we have to remember to shrink back down by moving the decimal point in the product to the left the same number of times we moved it to "embiggen" or enlarge: ### Multiplying by Powers of 10

When we multiply decimals by , , , or other powers of that are greater than , we can keep the decimal number the same and just move the decimal point to the right once for every zero.
When we multiply a decimal by , , , or other powers of that are less than , we can keep the decimal number the same and just move the decimal point to the left once for every decimal place.
Now that we know what happens when we multiply decimals, let’s check out some examples of how to multiply decimals using our simple steps!
PRACTICE
Multiplying Decimals

## Practice: Multiplying Decimals

Question 1 of 10:

### Step 1. Move the decimal points to the right to make whole numbers. Decimal Places Moved .

CONCLUSION
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