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Comparing Decimals - PowerPoint PPT Presentation


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Comparing Decimals. And Equivalent Decimals. 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.

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comparing decimals

Comparing Decimals

And Equivalent Decimals

equivalent decimals
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.
zeros
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.
polite zero
“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.
comparing or ordering
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.
example
Example:
  • Put these numbers in order from the largest to the smallest.0.32, 0.203, 0.03, 0.3
greater than and less than
Greater Than and Less Than
  • The symbol < is read “less than”
  • 5<12 Five is less than twelve.
  • The symbol > is read “greater than.”
  • 295 > 34 two hundred ninety five is greater than thirty four.
alligator
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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