100 questions on the addition and subtraction of integral in the first day of junior high school There should be numbers, letters, equations
456156.33412.824.4563123.456854.323676.231.79+23.456123.453451.432.423453.14265.312.69453.23.4763456.3423.7563.123.3456342.1.3464.345.45454545546345645456384634535863453.4545348633563456354636354365+5...