Decimals Flashcards

(15 cards)

1
Q

How do you add two decimal numbers?

Adding two decimals

A
  1. Line up the decimal points
  2. Add as the numbers
  3. Place the decimal poin in the result under the aligned points
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1
Q

How do you add a decimal to a whole number

Adding a decimal to a whole number

A
  1. Add a .0 (if needed add extra zeros) to the whole number
  2. Align decimals
  3. Add
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2
Q

What do you do when the numbers have unequal digits after the decimal

A

Add zeros so both numbers have the same number of decimal places before adding

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3
Q

How do you subtract one decimal from another

Subtracting two decimals

A
  1. Stack with decimal points aligned
  2. Subtracted each column right-to-left
  3. Keep the decimal under the aligned points
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3
Q

How do you subtract a whole number from a decimal

A
  1. Give the whole number a matching decimal (Add a. 00)
  2. Align Decimals
  3. Subtract with decimals
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4
Q

How do you handle different decimal lengths when subtracting

A

Insert zeros to make the same number of digits before subtracting to remain alignment

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5
Q

What’s the first step when multiplying decimals?

A

Ignore the decimal points and multiply the numbers as if they were integers

An integer is a whole number

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6
Q

How do you determine where to place the decimal in the product

A
  1. Count the decimal places in each factor
  2. Sum them (Add them)
  3. Insert the decimal point that many places from the right from your sum
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7
Q

How do you multiply a decimal by a whole number

A
  1. Multiply normally
  2. Place the decimal so the product has the same decimal places as the decimal factor
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8
Q

How do you divide a decimal by another decimal

A
  1. Moce the divisor’s decimal to the rught until it’s a whole number
  2. Move the dividends decimal the same number of places
  3. Divide

You can use long division or the box method

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9
Q

What is a dividend

A

The number being divided

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10
Q

What is the divisor

A

The number you are multiplying by

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11
Q

what is the quotient

A

The result of the divison

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12
Q

After shifting the decimals, how do you complete the divison?

A

Do standard long division and place the decimal point in the qutoient directly above it’s position in the adjusted dividend

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13
Q

How do you divide a decimal by a whole number?

A
  1. Set up long division
  2. Place the decimal in the qutoient above the dividends decimal
  3. Divde

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