diff --git a/mod/quiz/index.php b/mod/quiz/index.php
index 912d40407fb..602564f8e3f 100644
--- a/mod/quiz/index.php
+++ b/mod/quiz/index.php
@@ -147,7 +147,7 @@
             $feedback = '';
             if ($quiz->grade && !is_null($bestgrade)) {
                 if ($alloptions->scores) {
-                    $grade = "$bestgrade / $quiz->grade";
+                    $grade = round($bestgrade, $quiz->decimalpoints) . ' / ' . $quiz->grade;
                 }
                 if ($alloptions->overallfeedback) {
                     $feedback = quiz_feedback_for_grade($bestgrade, $quiz->id);
diff --git a/mod/quiz/lib.php b/mod/quiz/lib.php
index bf4dd5b51b7..0e79f02f07e 100644
--- a/mod/quiz/lib.php
+++ b/mod/quiz/lib.php
@@ -186,7 +186,7 @@ function quiz_get_best_grade($quiz, $userid) {
 
     // Need to detect errors/no result, without catching 0 scores.
     if (is_numeric($grade)) {
-        return round($grade, $quiz->decimalpoints);
+        return $grade + 0;
     } else {
         return NULL;
     }
diff --git a/mod/quiz/locallib.php b/mod/quiz/locallib.php
index 16a166ec235..b986592c9e3 100644
--- a/mod/quiz/locallib.php
+++ b/mod/quiz/locallib.php
@@ -429,7 +429,7 @@ function quiz_save_best_grade($quiz, $userid = null) {
 
     // Calculate the best grade
     $bestgrade = quiz_calculate_best_grade($quiz, $attempts);
-    $bestgrade = quiz_rescale_grade($bestgrade, $quiz);
+    $bestgrade = quiz_rescale_grade($bestgrade, $quiz, false);
 
     // Save the best grade in the database
     if ($grade = get_record('quiz_grades', 'quiz', $quiz->id, 'userid', $userid)) {
diff --git a/mod/quiz/view.php b/mod/quiz/view.php
index 98db79cd239..efd44c0fee5 100644
--- a/mod/quiz/view.php
+++ b/mod/quiz/view.php
@@ -267,11 +267,11 @@
             }
 
             // Ouside the if because we may be showing feedback but not grades.
-            $attemptgrade = quiz_rescale_grade($attempt->sumgrades, $quiz);
+            $attemptgrade = quiz_rescale_grade($attempt->sumgrades, $quiz, false);
 
             if ($gradecolumn) {
                 if ($attemptoptions->scores && $attempt->timefinish > 0) {
-                    $formattedgrade = $attemptgrade;
+                    $formattedgrade = round($attemptgrade, $quiz->decimalpoints);
                     // highlight the highest grade if appropriate
                     if ($overallstats && $numattempts > 1 && !is_null($mygrade) && $attemptgrade == $mygrade && $quiz->grademethod == QUIZ_GRADEHIGHEST) {
                         $table->rowclass[$attempt->attempt] = 'bestrow';
@@ -313,7 +313,7 @@
             if ($available && $moreattempts) {
                 $a = new stdClass;
                 $a->method = quiz_get_grading_option_name($quiz->grademethod);
-                $a->mygrade = $mygrade;
+                $a->mygrade = round($mygrade, $quiz->decimalpoints);
                 $a->quizgrade = $quiz->grade;
                 $resultinfo .= print_heading(get_string('gradesofar', 'quiz', $a), '', 2, 'main', true);
             } else {