diff --git a/src/main/java/src/TasksFrame.java b/src/main/java/src/TasksFrame.java
index 39b80f9..0c367fd 100644
--- a/src/main/java/src/TasksFrame.java
+++ b/src/main/java/src/TasksFrame.java
@@ -130,11 +130,11 @@ public class TasksFrame extends JFrame {
 
     public int roundSum(int a, int b, int c) {
 
-        return runde10(a) + runde10(b) + runde10(c);
+        return round10(a) + round10(b) + round10(c);
 
         }
 
-   public int runde10(int n) {
+   public int round10(int n) {
        if (n % 10 >= 5) {
            return n + 10 - n % 10;
        }
diff --git a/src/test/java/src/TasksFrameTest.java b/src/test/java/src/TasksFrameTest.java
index ea4a96b..ca296e1 100644
--- a/src/test/java/src/TasksFrameTest.java
+++ b/src/test/java/src/TasksFrameTest.java
@@ -126,6 +126,16 @@ class TasksFrameTest {
         assertEquals(70, c);
     }
 
+    @Test
+    void test_roundSum(){
+        TasksFrame tasksFrame = new TasksFrame();
+        int a = tasksFrame.roundSum(15, 21, 12);
+        assertEquals(50, a);
+        int b = tasksFrame.roundSum(48, 25, 17);
+        assertEquals(100, b);
+        int c = tasksFrame.roundSum(13, 9, 26);
+        assertEquals(50, c);
+    }
 }