Chinese 111 English 79 mathematics 72 politics 56 Dili 55 physics 44 chemistry 68 history 54 biology 67 in this case, should we choose liberal arts or science?

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1. 1+8999999×56
2. Give a group of data: 56.1, 55.9, 55.9, 56, 55.8, 55.7, 55.6, 56.2. The simplest way to calculate the average is A. Direct calculation B. Calculated by weighted average c. Subtract 56 from each data, average, and add 56 D. Subtract 60 from each data, average, and add 60
3. 12+21=33 23+32=55 47+74=121 95+59=154 Through the above calculation, we find that: a two digit number, and the sum of the two digits that the number is transferred into must be a multiple of 11. Can you explain why?
4. Observe the following formula 12 + 21 = 33 = 11 × (1 + 2) 23 + 32 = 55 = 11 × (2 + 3) 59 + 95 = 154 = 11 × (5 + 9) Write a similar equation for two digit numbers with ten digits A and one digit B. according to this explanation, can you add the sum of any two digit number and the original number after transposing the position of any two digit number and ten digit number to the original number and divide it by 11? If you think a and B are rational numbers (B ≠ 0), is the following formula true? What rules can be summed up? ①-a/b=a/-b=- （a/b） ②-a/-b=a/b 12+21=33=11×(1+2) 23+32=55=11×（2+3） 59 + 95 = 154 = 11 × (5 + 9)
5. Find the rules and fill in the numbers at 3, 3, 6, 12, 21, 39, 72 and 132
6. What is a multiple of two and a multiple of five
7. Among the four numbers of 21, 35, 56 and 60, (). ①: 2 has one multiple, ②: 3 has two multiple and ③: 5 has three multiple Among the four numbers 21, 35, 56 and 60, (). ① There is one multiple of: 2 ② There are two multiples of: 3 ③ There are three multiples of: 5
8. 27 56 50 72 97 91 83 105 891 121 prime number () composite number () odd number () even number () multiple of 2 () multiple of 3 () multiple of 5 The number of urgent first satisfactory answer
9. In 56,95130789, the multiple of 2 is What about even and odd numbers? What about multiples of 5?
10. 56 times 7, first calculate {} times {} = {}, then calculate {} times {} = {}, and finally calculate {} + {} = {}, so 56 times 7 = {}
11. 67+21+56-3+1=?
12. How to write program to transpose matrix 35 67 52 50, 33 47 66 39, 47 56 66 41, 30 69 55 38 with VB program
13. 1+2+59+52+53+54+55+56+57+48-78-56-34-67-464+45335-75676+0.341?
14. Ask a math question, how to calculate 55-56 / 55
15. Male students in class 6 (1) account for 56.25% of the total number, and the total number of students in class 6 (1) is between 40 and 50. How many students are there in class 6 (1)?
16. The first time: 49, the second time: 50, the third time: 64, the fourth time: 58, the fifth time: 53, the sixth time: 56, the seventh time: 55 The first time: 49, the second time: 50, the third time: 64, the fourth time: 58, the fifth time: 53, the sixth time: 56, the seventh time: 55, the eighth time: 47 Q. how many cars do you pass per hour?
17. 56+50＝?
18. What is the least common multiple of 55, 56 and 57
19. 37 cm = fraction of a meter? 156 kg = fraction of a ton? 218 square cm = fraction of a meter? 76 square meter = fraction of a meter
20. A piece of cloth is three fifths of a meter long. Is it () decimeter?