Least common multiple and greatest common factor of 32, 48 and 54 Urgent I!

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1. Least common multiple of 45 and 54
2. What is the least common multiple of 18 and 90 54 and 90 36,54,90
3. If an angle is 42 degrees, the remainder angle is () and the complement angle is ()
4. The complement of an angle is 34 ° less than three times its remainder. The remainder of this angle is______ Degree
5. It is known that ∠α = 35 ° 42'36 '', and the complement of its remainder angle is degree Correct answer, add 5 points!!!
6. If the remainder of an angle is 37 ° 26 ', then the angle equals () and the complement of the angle equals ()
7. (1) The remainder of an angle of 72 degrees and 20 'is equal to? 25 degrees and the complement of an angle of 31' is equal to? (2) the known angle (alpha, like a) is If the angle (beta, like scraping ear) is 2 times, and the remainder of angle alpha is 2 times equal to angle beta, then angle alpha = angle beta =?
8. If ∠ a = 37 ° 25 ', then the complementary angle and the residual angle of ∠ a are equal to?
9. The remainder of an angle is 42 degrees 37 ', and the degree of the complement of this angle is 42 degrees 37'
10. Given the angle a = 36 degrees, 42 minutes and 15 seconds, the angle a, the degrees of its complement and remainder A-dime, not a job
11. Least common multiple of 54, 48 and 72
12. 27 and 36 54 least common multiple
13. Find the least common multiple of 15 and 18 36 and 24 25 and 30 27 and 9
14. The least common multiple of 27 and 36 is______ The greatest common divisor is______ ．
15. The greatest common divisor of 36 and 48 is______ The least common multiple is______ ．
16. Finding the least common multiple of 27 and 63
17. Find the rule and fill in the formula, (1) 1 / 5 + 2 / 5 + 3 / 5 = 2 / 5 * 3 = 6 / 5 (1)1/5+2/5+3/5=2/5*3=6/5 (2)1/7+2/7+3/7+4/7+5/7=3/7*5=15/7 (3)1/7+2/7+3/7+4/7+5/7+6/7+7/7=4/7*( )=( ) (4)1/11+2/11+3/11+4/11+5/11+6/11+7/11+8/11+9/11=( )*( )=( )
18. Find the law and write the formula Question 1: 48 divided by 6, 8 divided by 1, 56 divided by 7, 24 divided by 3 Question 2: 18 divided by 9, 18 divided by 6, 16 divided by 4, 35 divided by 7, then fill in 2 more The third question: 700 + 800, 1500 + 5003000-5009000-6000, then fill in two more I have an answer in mind, but I'm not sure,
19. Observe the following formula and fill in the numbers regularly 1+2+1= 1+2+3+2+1= 1+2+3+4+3+2+1= First question, four square squares, fill in the number The second question, nine square squares, fill in the number The third question, 16 square squares, fill in the number
20. Find the rule and fill in the number according to the following formula 2/3-2/5=4/15 5/9-5/14=25/126 8/15-8/（）=8/15*8/（）