1. Xiaohong went upstairs with her father. Xiaohong walks slowly, but his father walks fast. When Xiaohong went to 1 building, his father had already gone to the second floor. When Xiaohong went to the third floor, which floor did his father go to

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2. A fruit group 10 people, 7 people like bananas and 5 people like apples. How many people like bananas and apples?

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3. The duckling said it was strange and strange. There is a chicken in the duckling team, counting, it is the sixth, counting backwards, it is the seventh, how many ducklings are there?

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Find a rule to fill numbers.

① 5、7、9、 1 1、 13、( )

②0、 1、 1、2、3、5、8、( )

5. Fill in the numbers as needed

( 1)36、 12、45、7、35、23、60、55

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(2) 13、24、 15、7、6 1、25、 14、8

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