Your students can investigate the intriguing use of formal units to measure length in world records with these fun worksheets.
Three differentiated versions of the worksheet are available in this resource. The first requires students to match the record with the number of formal units. For the second version, they also need to label the type of units. The final version requires students to estimate the number of formal units.
When you have decided which version of the worksheets to give to which students, you can simply print the number of copies that you need. A handy answer sheet is also provided in this resource.