forty - Sarah has 60 apples. She gives 20 apples to her friend. How many apples does she have left?, eighty - Tom has 45 marbles. His brother gives him 35 more. How many marbles does Tom have now?, fifty - There are 70 students in a school club. If 20 students leave, how many are left?, ninety - A bus can carry 100 passengers. Right now, there are 10 passengers on the bus. How many more people can get on?,

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