Sasa walked three times along the 80 meter long straight road, 120 steps in the first time, 124 steps in the second time, and 122 steps in the third time. What is the average length of Sasa's step She walked 1020 steps from home to school. How many meters does Sasha's home go to school?

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• 1. Xiao Ming walked along a 70 meter straight road. He took 110 steps for the first time, 111 steps for the second time, 109 steps for the third time and 110 steps for the fourth time. What is the average length of one step
• 2. A and B run back and forth on a 100 meter long straight road, with a speed of 3 meters per second and B speed of 2 meters per second. If they start from both ends of the straight road at the same time, how many times do they meet after 10 minutes?
• 3. Xiao Ming wanted to know his step length, so he walked three times along the track 100 meters away, 124, 126 and 125 steps respectively. Xiao Ming's step length was about 100 meters______ He measured the length of the cement road in the center of our school. After about 150 steps, the cement road in the center is about long______ Rice
• 4. Xiaoguang walked 80 meters, 125 steps for the first time, 130 steps for the second time, 123 steps for the third time and 122 steps for the fourth time. His average step length was () meters?
• 5. Xiaohua walked three times on the 60 meter track, 119 steps in the first time, 118 steps in the second time and 123 steps in the third time. How many meters is Xiaohua's average step length? He walked 1500 steps from home to school. How many meters is it from Xiaohua's home to school?
• 6. Uncle Li's average step length is about 70cm. He walked around the edge of a rectangle which is twice the length and width. He just walked 900 steps?
• 7. Pile up a pile of steel pipes, 11 at the bottom, one less at each layer upward, until one. How many steel pipes are there in this pile?
• 8. A total of 465 steel pipes are placed on a V-shaped frame, one on the bottom layer and one more on each upper layer. How many layers are there? How many on the top layer?
• 9. There are 45 steel pipes in the factory to be stacked into trapezoid, and after stacking, the upper layer is 7, and the number of layers is only 5? Determinant
• 10. Xiao Li sees a pile of steel pipes in the warehouse. There are 15 steel pipes at the bottom layer. There is one difference between each two adjacent layers. There are 8 steel pipes at the top layer. How many steel pipes are there in this pile?
• 11. Xiao Ming walked four times along a 50 meter long straight road, 78 steps for the first time, 82 steps for the second time, and 79 steps for the third time, The fourth time is 80 steps. Xiaoming's average step length is about () meters. The number is two decimal places
• 12. Observe the law of the following column numbers: - 1,1,2, - 2, - 3,3,4, - 4, - 5,5,6, - 6 Then the number 2006 is ()
• 13. Observe the law of the following column numbers: - 1,1,2, - 2, - 3,3,4, - 4, - 5,5 What is the number 2006? It's better to give a brief reason
• 14. Are 1, - 2,3, - 4,5, - 6,7, - 8.2006 the number in this column? If so, which number?
• 15. One column number 1, - 2,3, - 4,5 - 6 What is item n
• 16. There is a column of numbers: 1,3,4,7,11,18... To find the number 2006 divided by 6
• 17. There is a column of numbers: 1,2,3,2,1,2,3,4,3,2,3,4,5,4,3,4,5,6,5,4, what is the number 2006
• 18. A column of numbers 1, - 2, 3 -, 4, 5, - 6. Find the number 2009, what is the number 2010
• 19. There is a column of numbers 1,2,3,2,3,4,3,4,5,4,5,6 The number 2009 in this series is ()
• 20. A series of numbers are arranged according to the rule, 1 / 1 1 / 2 2 / 2 1 / 3 2 / 3 3 / 3