Answer:
To show that 3 divided by 1/4 is equal to 3x4 on a number line:
1. Draw a number line starting from 0 and mark every 1/4 division.
2. Label 3 divisions with the corresponding value '3'.
3. Move 4 divisions in the same direction as that of 3 divisions.
4. Mark the point at 4 divisions and label it as ’12’.
5. From the starting point to the point labelled ‘12’, there are 7 divisions.
6. Since each division represents a quantity of 1/4, dividing 3 by 1/4 (or multiplying by 4) will result in a total of 12, or 3x4.