1. The problem is to represent a number or an expression on a number line. 2. A number line is a straight line where each point corresponds to a real number. 3. To show a number on the number line, locate the point corresponding to that number. 4. For example, to show the number 3, find the point three units to the right of zero. 5. If the number is negative, locate the point to the left of zero. 6. If the number is a fraction or decimal, place it between the integers accordingly. 7. Mark the point clearly with a dot or a circle and label it. 8. This visual helps understand the position and order of numbers.