Primary school to junior high school English self introduction, with notes, thank you! Urgent!

Primary school to junior high school English self introduction, with notes, thank you! Urgent!

hello, everyone.my name is xxx,I'm xx yeas old.I'm a xx boy\ gorl.In my school,I always play xx with my friends,Ilove them,and we have a good time together.I think I can always be happy with them,becaus...

As shown in the figure, the eight positions on the circle are numbered from 1 to 8. Now there is a small ball. On the first day, 329 positions advance clockwise from position 1, 485 positions advance counterclockwise on the second day, 329 positions advance clockwise on the third day, 485 positions advance counterclockwise on the fourth day And so on, then at least after () days, the ball will return to the original No. 1 position

Because the ball returns to the original No. 1 position, it must go 8 positions, 485-329 = 156 (pieces); therefore, to require the ball to return to the original No. 1 position, it is to see that 8 can divide 156 × n to get the minimum number n; because 156 contains the factor of 4: 156 = 4 × 3 × 13; therefore, the minimum number n is 2; therefore, at least after 2 × 2 = 4 (days), the ball returns to No. 1 position

Fill in the blanks:
Xiao Pang traveled 16 kilometers in 0.8 hours by car. He traveled () kilometers per hour, and it takes () hours to travel 1 kilometer
Practical questions:
It takes 0.8 hours for the car to go from place a to place B. It has already driven 16.2 kilometers. It takes 0.3 hours. How many kilometers is the distance between the two places?
A 216 meter long canal is planned to be completed in 12 days by six people. According to this calculation, if the number of people increases to three times of the original, how many days can it be completed?
expand:
There is a barrel of oil, half of which is poured out each time. After three times, the barrel weighs 8kg. The known barrel weighs 3kg. The correct formula for calculating the weight of oil in the original barrel is ()
A、（8-3）×3 B、（8-3）×2×3 C、（8-3）×2×2×2 D、8×2×2×2-3
A four digit number, add a decimal point to it and add it to the original number to get 4424.81. The four digit number is ()

Xiao Pang traveled 16 kilometers in 0.8 hours by car. He traveled (20) kilometers per hour, and it took (0.05) hours to travel 1 kilometer
It takes 0.8 hours for the car to go from place a to place B. It has already driven 16.2 kilometers. It takes 0.3 hours. How many kilometers is the distance between the two places?
0.8 △ 0.3 × 16.2 = 43.2km
Or 16.2 △ 0.3 × 0.8 = 43.2km
A 216 meter long canal is planned to be completed in 12 days by six people. According to this calculation, if the number of people increases to three times of the original, how many days can it be completed?
6 × 12 (6 × 3) = 4 days
There is a barrel of oil, half of which is poured out each time. After three times, the barrel weighs 8kg. The known barrel weighs 3kg. The correct formula for calculating the weight of oil in the original barrel is (c)
A、（8-3）×3 B、（8-3）×2×3 C、（8-3）×2×2×2 D、8×2×2×2-3
A four digit number, add the decimal point to it and add it to the original number to get 4424.81, the four digit number is (4381)
4424.81÷（100+1）×100=4381