Final Answer:
The image shows four identical rulers, each marked in millimeters (mm) on the top and inches (") on the bottom. Each ruler goes from 0 to 30 mm on the top scale and 0 to 11 inches on the bottom scale. Since no specific question was asked about the rulers — such as measuring an object or converting units — there is no problem to solve numerically. The task appears to be for printing and using these rulers physically.
If you were supposed to measure something with them, please provide the object or length you need measured. Otherwise, this sheet is ready to print and use as a real ruler!
Parent Tip: Review the logic above to help your child master the concept of free printable mm ruler.