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.
