diff --git a/src/main/java/src/TasksFrame.java b/src/main/java/src/TasksFrame.java
index f01a0b0..39b80f9 100644
--- a/src/main/java/src/TasksFrame.java
+++ b/src/main/java/src/TasksFrame.java
@@ -80,9 +80,70 @@ public class TasksFrame extends JFrame {
         setupQuersumme();
 
         setupKgV();
+        setupRoundSum();
 
     }
 
+    private void setupRoundSum() {
+        JPanel jPanel = setupPanel("Runde Summe");
+
+        JButton button = new JButton("round sum");
+        button.setVisible(true);
+        button.setBounds(10, 65, 100, 30);
+
+        JTextField a = new JTextField();
+        a.setBounds(10, 40, 30, 20);
+        a.setVisible(true);
+
+        JTextField b = new JTextField();
+        b.setBounds(50, 40, 30, 20);
+        b.setVisible(true);
+
+        JTextField c = new JTextField();
+        c.setBounds(90, 40, 30, 20);
+        c.setVisible(true);
+
+        JLabel jLabel = new JLabel();
+        jLabel.setVisible(true);
+        jLabel.setBounds(10,90,60,30);
+
+        jPanel.add(button);
+        jPanel.add(a);
+        jPanel.add(b);
+        jPanel.add(c);
+        jPanel.add(jLabel);
+
+        button.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                String texta = a.getText();
+                String textb = b.getText();
+                String textc = c.getText();
+                Integer val_a = Integer.valueOf(texta);
+                Integer val_b = Integer.valueOf(textb);
+                Integer val_c = Integer.valueOf(textc);
+                int res = roundSum(val_a, val_b, val_c);
+                jLabel.setText(String.valueOf(res));
+            }
+        });
+    }
+
+    public int roundSum(int a, int b, int c) {
+
+        return runde10(a) + runde10(b) + runde10(c);
+
+        }
+
+   public int runde10(int n) {
+       if (n % 10 >= 5) {
+           return n + 10 - n % 10;
+       }
+       else {
+           return n - n % 10;
+       }
+    }
+
+
     private void setupKgV() {
         JPanel jPanel = setupPanel("kgV");
 
diff --git a/src/test/java/src/TasksFrameTest.java b/src/test/java/src/TasksFrameTest.java
index 5eef25f..ea4a96b 100644
--- a/src/test/java/src/TasksFrameTest.java
+++ b/src/test/java/src/TasksFrameTest.java
@@ -115,6 +115,17 @@ class TasksFrameTest {
 
     }
 
+    @Test
+    void test_kgV(){
+        TasksFrame tasksFrame = new TasksFrame();
+        int a = tasksFrame.kgV(5, 8);
+        assertEquals(40, a);
+        int b = tasksFrame.kgV(28, 64);
+        assertEquals(448, b);
+        int c = tasksFrame.kgV(35, 70);
+        assertEquals(70, c);
+    }
+
 }