diff --git a/aula202-calculadora/buttons.py b/aula202-calculadora/buttons.py
index b98d89f..070ee74 100644
--- a/aula202-calculadora/buttons.py
+++ b/aula202-calculadora/buttons.py
@@ -1,4 +1,4 @@
-from PySide6.QtWidgets import QPushButton
+from PySide6.QtWidgets import QGridLayout, QPushButton
 from variables import MEDIUM_FONT_SIZE
 
 
@@ -13,3 +13,16 @@ class Button(QPushButton):
         self.setFont(font)
         self.setMinimumSize(75, 75)
         self.setProperty('cssClass', 'specialButton')
+
+
+class ButtonsGrid(QGridLayout):
+    def __init__(self, *args, **kwargs) -> None:
+        super().__init__(*args, **kwargs)
+
+        self._grid_mask = [
+            ['C', '◀', '^', '/'],
+            ['7', '8', '9', '*'],
+            ['4', '5', '6', '-'],
+            ['1', '2', '3', '+'],
+            ['',  '0', '.', '='],
+        ]
diff --git a/aula202-calculadora/main.py b/aula202-calculadora/main.py
index f33956a..7a52d3e 100644
--- a/aula202-calculadora/main.py
+++ b/aula202-calculadora/main.py
@@ -1,6 +1,6 @@
 import sys
 
-from buttons import Button
+from buttons import Button, ButtonsGrid
 from display import Display
 from info import Info
 from main_window import MainWindow
@@ -22,17 +22,15 @@ if __name__ == '__main__':
 
     # Info
     info = Info('2.0 ^ 10.0 = 1024')
-    window.addToVLayout(info)
+    window.addWidgetToVLayout(info)
 
     # Display
     display = Display()
-    window.addToVLayout(display)
+    window.addWidgetToVLayout(display)
 
-    button = Button('Texto do botão')
-    window.addToVLayout(button)
-
-    button2 = Button('Texto do botão')
-    window.addToVLayout(button2)
+    # Grid
+    buttonsGrid = ButtonsGrid()
+    window.vLayout.addLayout(buttonsGrid)
 
     # Executa tudo
     window.adjustFixedSize()
diff --git a/aula202-calculadora/main_window.py b/aula202-calculadora/main_window.py
index 9466640..4d1e6e9 100644
--- a/aula202-calculadora/main_window.py
+++ b/aula202-calculadora/main_window.py
@@ -19,5 +19,5 @@ class MainWindow(QMainWindow):
         self.adjustSize()
         self.setFixedSize(self.width(), self.height())
 
-    def addToVLayout(self, widget: QWidget):
+    def addWidgetToVLayout(self, widget: QWidget):
         self.vLayout.addWidget(widget)