Comparing decimals

Consider these two decimals: 3.138 and 3.14

Which is bigger?

To compare these decimals you need to compare their place values.

units
  tenths hundredths thousandths
3 . 1 3
8
3 . 1 4  

Since the 4 in the hundredths place of the second number is larger than the 3 in the hundredths place of the first number, the second number is larger than the first. The comparison of these two numbers is not affected at all by the 8 in the first number.

 

Now practice sorting fractions from least to greatest:

 

 

Duane Habecker, Created with GeoGebra

 

 

 

Self-Check


Q1: Sort from least to greatest.   3.08   3.2   3.14 [show answer] 

Q2: Sort from least to greatest.  1.21   1.211   1.2109 [show answer] 

Q3: Sort from least to greatest.  7.09   7.909   7.91 [show answer] 

 

 

 

 

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