Public Class Form1

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
TextBox3.Text = Val(TextBox1.Text) – Val(TextBox2.Text)
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox3.Text = Val(TextBox1.Text) + Val(TextBox2.Text)
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
TextBox3.Text = Val(TextBox1.Text) / Val(TextBox2.Text)
End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
TextBox3.Text = Val(TextBox1.Text) ^ Val(TextBox2.Text)
End Sub

Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
TextBox3.Text = Val(TextBox1.Text) * Val(TextBox2.Text)
End Sub

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
TextBox3.Text = Val(TextBox1.Text) Mod Val(TextBox2.Text)
End Sub

Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click
TextBox1.Text = ” ”
TextBox2.Text = ” ”
TextBox3.Text = ” ”
End Sub

Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click
End
End Sub
End Class