関連ワード:  is negative 0 a rational number    is negative 0 an irrational number    is zero negative rational number    is 0 a positive or negative rational number    is 0 /- 3 a negative rational number    is 0 /- 7 a negative rational number    0 is a negative rational number true or false    5 0 is a negative rational number true or false    5 0 is a negative rational number    is negative 0.6 a rational number