Level 3
Mr Leong had 60 tennis balls. He gave 112 of his tennis balls to Brandon. During the practice, Mr Leong lost 4 tennis balls. How many tennis balls did Mr Leong have in the end?
Level 3 Xavier gave 18 of his stamps to Joe, 14 of his stamps to Jason and 28 of his stamps to Kim. He then had 16 stamps left. How many stamps had he at first?
Level 3
A sum of money was shared among Amy, Brix and Danny. Amy received 18 of the money. Brix received 14 of the money. Danny received the remaining $250. How much was the sum of money?
Level 3
A snail is climbing to the top of a wall. It starts from the bottom of the wall and after climbing 25 of the height of the wall, it begins to rain. During the rain, the snail slips down 2 m. When the rain stops, the snail climbs up the remaining 710 of the height of the wall to reach the top of the wall. Find the height of the wall.
