We investigate and compare assessment practices in two (dual- and single-mode) institutions in Nigeria. A mixed-methods approach was employed. Descriptive statistics and narration were carried out for the purpose of determining what the assessment practices were and how they may be related to the students learning of undergraduate mathematics in distance and online education. Results show that there are similarities and variations in assessment practices that shaped open and distance learning practices in these universities. This suggests a need for careful review of assessment practices aimed at improving students' engagement and learning for outstanding undergraduate mathematics learning experiences.