Find the rule and add the number 3,9,17,19,(
thirty-seven
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- 1. Find the rule and add the number 1,8,27,( ),125,216,. There are also 12 / () = 0.75 = 24 / 24 () = (); 4 = ()% as required, so that their greatest common factor is 1 1. Both books are prime numbers; () and () 2. Both books are composite numbers; () and (). 3 are prime numbers and composite numbers; () and ()
- 2. 2 / 3,1 has 1 / 3,2,1 has 2 / 3,3 has 1 / 3,4, (), () find the difference between the 100th and 50th numbers
- 3. Find the law, 1 / 2, 1 / 3, 1 / 10, 1 / 15, 1 / 26. The ninth number is Fast
- 4. Find the rule, 16,3.8,9,4. {}, {}. What's in the brackets
- 5. How to fill in the brackets?
- 6. Fill in the blanks: 1,1,2,3,7,16,65_ ,4546,……
- 7. ,13,37,109,( ),( )
- 8. 16,23,9,30,2, () to find the law needs method
- 9. 3+5+7+9… +(2n-1)+(2n+1)=
- 10. 1/1*5+1/3*7+1/5*9+.+1/(2n-1)(2n+3)
- 11. Fill in the numbers regularly______ ,12.
- 12. 1,3,7,13,21,31,43,57,
- 13. A watermelon, mom ate 3 / 8, dad and I ate 2 / 8 of this watermelon. Has this watermelon finished
- 14. Xiaoming ate one third of a watermelon, one sixth less than his father. His father ate this watermelon
- 15. Divide 2 kg into 5 parts on average, each part is a few parts of a kilogram, each part is a few parts of a kilogram, each part is a few parts of a kilogram
- 16. Divide a cake equally into four parts, which means that three-thirds of the cake is three out of four?
- 17. Divide a circle into four parts equally. Each part is a quarter of it. Write 1 / 4. Such three parts are () and 1 / 4 is its ()
- 18. How many parts of a watermelon are given to two people on average
- 19. A 5kg watermelon is eaten by 7 people. How many parts of this melon does each person eat on average? How many kilos?
- 20. Divide 3 / 4 of a cake into 5 parts. How many parts of the cake are each? How many parts of the cake are three?