You can determine how much time it takes to get through a batch of assembler operations by knowing the cycles per instruction and the clock frequency. Typically it takes 1 clock cycle to get through one operation. However, branch operations can take one or two.
These particular slides correspond to Chapter 3 of the textbook, "The AVR Microcontroller and Embedded Systems Using Assembly and C: Using Arduino Uno and Atmel Studio."
The original slides and the main reference book can be found by the original author, Sepehr Naimi. See his website, https://nicerland.com, as well as co-author's website: http://www.microdigitaled.com
The slides are used with permission. They have been updated by James Smith to reflect the way he teaches EECS 2021 at York University.