Comparing%20Decimals - PowerPoint PPT Presentation

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Comparing%20Decimals

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Comparing Decimals. And Equivalent Decimals. Equivalent Decimals. 034 is the same as 34. ... Comparing or Ordering. 1) Line up the decimal. 2) Fill in zeros ... – PowerPoint PPT presentation

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Title: Comparing%20Decimals


1
Comparing Decimals
  • And Equivalent Decimals

2
Equivalent Decimals
  • 034 is the same as 34.
  • The zero in the hundreds place isn't necessary.
  • The number still has no hundredths, 3 tens and 4
    ones.
  • 1.5 is the same as 1.50
  • The zero at the end is not necessary, but helps
    in calculations.
  • The number still has 1 one, 5 tenths, and no
    hundredths.

3
Zeros
  • You may add as many zeros left of digits that are
    before a decimal.
  • You may also add as many zeros as you want right
    of the digits after the decimal.
  • 000032.456000 032.456 32.456 32.4560000
    These all have 3 tens,, 2 ones, 4 tenths, 5
    hundredths and 6 thousandths.

4
Polite zero
  • 0.42 is the same as .42,
  • however if there is no whole part (ones, tens,
    etc..) in a number
  • a single zero in front of the decimal is proper.

5
Comparing or Ordering
  • 1) Line up the decimal2) Fill in zerosThese
    steps insure tenths will be compared to tenths,
    hundredths to hundredths, thousandths to
    thousandths and so on.

6
Example
  • Put these numbers in order from the largest to
    the smallest.0.32, 0.203, 0.03, 0.3

7
Greater Than and Less Than
  • The symbol lt is read less than
  • 5lt12 Five is less than twelve.
  • The symbol gt is read greater than.
  • 295 gt 34 two hundred ninety five is greater than
    thirty four.

8
Alligator
  • The alligator turns to eat the bigger number is
    an easy way to remember which way to write the
    symbol.
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