Decimals Flashcards

1
Q

How do you add decimals?

A
  1. Stack up the numbers, lining them up by the decimal. Fill in any blank spots with zeros.
  2. Add the columns, starting at the right.
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2
Q

How do you subtract decimals?

A
  1. Stack up the numbers, lining them up by the decimal. Fill in any blank spots with zeros.
  2. Add the columns, starting at the right.
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3
Q

What are the names of the places after the decimal point?

For example, in the number 1.743:

  • What place is the 7 in?
  • What place is the 4 in?
  • What place is the 3 in?
A
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4
Q

How do you multiply decimals?

A
  1. Stack up the numbers, aligning them so that all of them are all the way pushed to the right.
  2. Multiply like normal (ignoring the decimal places for a second).
  3. Count how many decimal digits there are in the numbers you’re multiplying. Your final answer will have this many decimal digits.
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5
Q

Calculate the following:

2.35 × 7.8

A
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6
Q

How do you divide a decimal number by a whole number?

A
  1. Put them in the “long division” box just like normal.
  2. Put a decimal point on top of the box right above the other one.
  3. Divide like normal.
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7
Q

Calculate the following:

73.59 ÷ 2

A
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