Math Solving

In maths we had to create an DLO and solve the question. The question that we had to answer is if you saved 20 litres of water each day for a week. How many litres would have you saved?. This maths DLO that I have made shows you what the questions is and how I solved it. We were allowed to use any strategy that we wanted as long as the question can be answered. We also had to write on our DLO why we used the strategy and because we used it.