Graphs: The Vocabulary of Numbers

There are some special words for numbers, fractions and percentages.

Look at the following table which shows a number in different years (1990-1995) :

1990 1995
1200 1800

You could describe the above table using numbers, fractions or percentages:

  • The number went up by 600, from 1200 to 800. (Number)
  • The number went up by half, from 1200 to 1800. (Fraction)
  • The figure went up by 50%, from 1200 to 1800. Percentage)
  • The figure went up 50%, to 1800. (Percentage)
1992 1994 1996 1998
500 1000 3000 12000

Use “trebled,” “-fold,” and “times:”

  • The number doubled between 1992 and 1994.
  • The number trebled between 1994 and 1996.
  • The figure quadrupled from 1996 to 1998
  • There was a twofold increase between 1992 and 1994.
  • The figure went up sixfold between 1992 and 1996.
  • The figure in 1996 was three times the 1992 figure.
  • The figure in 1998 was four times the 1996 figure.

1992 1994 1996 1998
1000 800 400 100

Use Fractions:

  • Between 1992 and 1994, the figure fell by one-fifth.
  • Between 1994 and 1996, the number dropped by a half.
  • The figure in 1998 was one-tenth the 1992 total.

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