Rational Numbers

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. In general, for an a, we have, a + (– a) = (– a) + a = 0

2. has no reciprocal

3. The , tells ‘how many’ of these parts are considered. So, a rational number

4. In a rational number, the , tells the number of equal parts into which the first unit has been divided.

5. Unlike natural numbers and integers, the number of rational numbers between
two rational numbers is not .