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Reading decimal numbers

Take care when reading the values of decimal numbers.

The numbers 4.2 and 4.20 have the same value:

  • 4.2 means 4 and 2 tenths.
  • 4.20 means 4 and 2 tenths and 0 one-hundredths. The last zero does not need to be there.

The numbers 4.2 and 4.02 do not have the same value:

  • 4.2 means 4 and 2 tenths.
  • 4.02 means 4 and 0 tenths and 2 one-hundredths.

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