Decimals Flashcards
(15 cards)
How do you add two decimal numbers?
Adding two decimals
- Line up the decimal points
- Add as the numbers
- Place the decimal poin in the result under the aligned points
How do you add a decimal to a whole number
Adding a decimal to a whole number
- Add a .0 (if needed add extra zeros) to the whole number
- Align decimals
- Add
What do you do when the numbers have unequal digits after the decimal
Add zeros so both numbers have the same number of decimal places before adding
How do you subtract one decimal from another
Subtracting two decimals
- Stack with decimal points aligned
- Subtracted each column right-to-left
- Keep the decimal under the aligned points
How do you subtract a whole number from a decimal
- Give the whole number a matching decimal (Add a. 00)
- Align Decimals
- Subtract with decimals
How do you handle different decimal lengths when subtracting
Insert zeros to make the same number of digits before subtracting to remain alignment
What’s the first step when multiplying decimals?
Ignore the decimal points and multiply the numbers as if they were integers
An integer is a whole number
How do you determine where to place the decimal in the product
- Count the decimal places in each factor
- Sum them (Add them)
- Insert the decimal point that many places from the right from your sum
How do you multiply a decimal by a whole number
- Multiply normally
- Place the decimal so the product has the same decimal places as the decimal factor
How do you divide a decimal by another decimal
- Moce the divisor’s decimal to the rught until it’s a whole number
- Move the dividends decimal the same number of places
- Divide
You can use long division or the box method
What is a dividend
The number being divided
What is the divisor
The number you are multiplying by
what is the quotient
The result of the divison
After shifting the decimals, how do you complete the divison?
Do standard long division and place the decimal point in the qutoient directly above it’s position in the adjusted dividend
How do you divide a decimal by a whole number?
- Set up long division
- Place the decimal in the qutoient above the dividends decimal
- Divde
~~~
```