Question
Mr Ken had 57 soccer balls. He gave 23 of his soccer balls to Owen. During the practice, Mr Ken lost 4 soccer balls. How many soccer balls did Mr Ken have in the end?
4 m

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Mr Ken had 57 soccer balls. He gave 23 of his soccer balls to Owen. During the practice, Mr Ken lost 4 soccer balls. How many soccer balls did Mr Ken have in the end?