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Hello everyone, my name is Hoang Thao My. Today, I will talk about addition and subtraction with 8-digit numbers. Look at the two pictures. In the first picture, there are twenty-four million chickens. In the second picture, there are forty-six million ducks. How many animals are there in total? Let’s calculate. Twenty-four million plus forty-six million equals seventy million. So, there are seventy million animals in total. Now, let’s look at subtraction. What is forty-six million minus twe