Page 114 - DK Children's Encyclopedia
P. 114

Fractions                                                                         SEE ALSO

                                                                                               ▸ ▸ Astronomy  p.32
                                                                                               ▸ ▸ Clocks  p.61
           Fractions are parts of whole numbers. They are written as                           ▸ ▸ Measuring  p.159
           one number over another number. The number on the top                               ▸ ▸ Numbers  p.185
           is usually smaller than the one on the bottom. Fractions                            ▸ ▸ Shapes  p.222

           can be used on their own or with whole numbers.                                     ▸ ▸ Symmetry  p.248







       Common
       fractions                                                        1
       A whole number can                                                                       Quarter
       be split into any                                                                        A quarter is 1 part
       number of parts to                                                                       out of 4 equal parts.
       make a fraction.                1
       Here are some of                                                 4
       the fractions we
       use most often.

                                       2                                      1







           Half                                                               8
           Half of a number is                                                                  Eighth
           when it is split into                                                                One-eighth is 1 part
           two equal parts.                                                                     out of 8 equal parts.




                                                                                       Same but different?
                                                                                       Fractions can be written differently
       Parts of a fraction                  Decimals                                   but mean the same. A half is the
                                                                                       same amount as two quarters.
       The top number in a fraction is      Fractions can also be written as
       called the numerator. The bottom     decimals. The number to the left of the                       One half ( ⁄2)
                                                                                                                 1
       number is called the denominator.    decimal point is a whole number. The
       They are divided by a line.          number to the right is the fraction.

             3               The numerator                            This number is
                                                                      the fraction.
                             The denominator 0.75


             4                                                        The decimal point

                                                                      divides the whole
                                                                      number from
                                                                                                                2
          Three-quarters                             Decimal          the fraction.                  Two-quarters ( ⁄4)
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