diff --git a/events/models.py b/events/models.py
index 2fdd95b..a11360a 100644
--- a/events/models.py
+++ b/events/models.py
@@ -45,6 +45,32 @@ class TimeSlot(models.Model):
     def count_admitted(self):
         return self.count_with_status(EventRegistration.ADMITTED)
 
+
+    def precision(self):
+        # TODO put this in a database field?
+        return 10
+
+    def lower_round(self, n):
+        return (n // self.precision()) * self.precision()
+
+    def upper_round(self, n):
+        return ((n + self.precision()) // self.precision()) * self.precision()
+
+    # Unfortunately, Django doesn't support arguments in templates
+
+    def lower_interested(self):
+        return self.lower_round(self.count_interested())
+
+    def upper_interested(self):
+        return self.upper_round(self.count_interested())
+
+    def lower_admitted(self):
+        return self.lower_round(self.count_admitted())
+
+    def upper_admitted(self):
+        return self.upper_round(self.count_admitted())
+
+
     def registration_of(self, user):
         if not user.is_authenticated:
             return None
diff --git a/events/templates/events/registrations.html b/events/templates/events/registrations.html
index c8591a6..a6331e7 100644
--- a/events/templates/events/registrations.html
+++ b/events/templates/events/registrations.html
@@ -4,8 +4,8 @@
 <form action="{% url 'events:deregister' timeslot.id %}" method="post">
 {% endif %}
 	{% csrf_token %}
-	<p>{{ timeslot.time_str }}, {{ timeslot.count_admitted }}/{{ event.capacity }} bevestigd{% if timeslot.count_interested %},
-	{{ timeslot.count_interested }} op wachtlijst
+	<p>{{ timeslot.time_str }}, tussen {{ timeslot.lower_admitted }} en {{ timeslot.upper_admitted }} van de mogelijke {{ event.capacity }} aanwezigheden bevestigd{% if timeslot.count_interested %},
+	tussen {{ timeslot.lower_interested }} en {{ timeslot.upper_interested }} mensen op wachtlijst
 	{% endif %}
 	</p>