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I have arranged some classic elementary school math intelligence games for you. Let's see if you can do it right!
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Moving matchstick
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The figure below shows four squares of the same size composed of 12 sticks. Please move three sticks so that the original figure becomes three squares of the same size. Think about it, how to move?
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10 matchsticks are arranged as shown below. Can you move one of them into two squares?
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Below are four squares made up of 15 matchsticks. Please move two matchsticks and turn them into six squares.
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Crossing the river game
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Prepare four pieces of paper, write down the boy, wolf, fox and cabbage respectively, give the paper to the child and explain the following rules of the game to him.
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The boat can only carry the boy and one of the other three people at a time. When the boy is not present, if the wolf and the fox are together, the fox will be eaten by the wolf; If the fox is with the cabbage, the fox will eat the cabbage.
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How to let them all sail?
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Cut watermelon
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Cut a large watermelon evenly with a fruit knife, and cut it 10. How many pieces can I cut the watermelon into at most? How many pieces can you cut at least?
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Age problem
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A manager has three daughters. The ages of the three daughters add up to 13, and the ages of the three daughters add up to the manager's own age. A subordinate knows the manager's age, but he still can't determine the ages of his three daughters.
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At this time, the manager said that only one daughter's hair was black, and then the subordinates knew the age of the manager's three daughters. What are the ages of the three daughters? Why?
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Scale calibration
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A ruler with the length of 1 1 cm can measure the length of any article with the length of integer cm between 1 and1cm only by engraving three integer scales. If possible, which scales should be engraved?
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Do you have an answer to these interesting math problems? Welcome to leave your problem-solving ideas in the comment area and communicate with you!
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