3 / 4 = 6 / 8 = 9 / 12 = several

RELATED INFORMATIONS

• 1. Find the rule and fill in the appropriate number in the brackets. (1) 45, 25, 15______ ，120，______ ，______ ．（2）12，34，98，2716，______ ，______ ．
• 2. Fill in the brackets with the appropriate number 4 / 1 9 / 1 16 / 1 () (). 2 / 1 6 / 1 12 / 1 20 / 1 30 / 1 () ()
• 3. 1 / 9 2 / 27 1 / 27 () what do you fill in the brackets? It's a question for civil servants
• 4. Fill in according to the rules: 2 1 4 3 6 9 8 27 () () what should be filled in the brackets?
• 5. Find the rules: 2, 3, 4, 9, 8, 27, (). What do you fill in the brackets?
• 6. A series of numbers (1,1,1); (2,4,8); (3,9,27); (4,16,64) The sum of the three numbers in the tenth bracket is ()
• 7. Take off formula calculation (those that can be simplified should be simplified) ① (1 / 27-1 / 36) △ 1 / 9 ② 8 / 23-9 △ 5 / 6 × 3 / 16
• 8. Calculate the following questions (1) 763 + 298 (2) 0.25 * 0.25 * 16 (3) 19.9 * 99 + 19.9 (4) 22 / 23
• 9. （5）8.6×2.7+3.5×1.6 （6）(0.19×5.4＋2.6×0.19)×12.5 （7）9.99×2.22+3.34×3.33 (8) What is the sum of 1.2 divided by the quotient of 4.2 and the product of 5 and 6.02? Multiple simple operations
• 10. How to do 8 out of 27
• 11. -9+12÷(-6)-(-4)×(-4)÷(-8)
• 12. 2＝2＝1×2 2+4＝6＝2×3 2+4+6＝12=4×5 2+4+6+8=20=4×5 . 1. We can guess what is the sum of continuous even numbers from 2 to n (n is a natural number)? 2. When n = 10, what is the sum of continuous even numbers from 2 to the tenth?
• 13. Starting from 2, continuous even numbers are added, and the sum is as follows: 2 + 2 = 2 × 22 + 4 = 6 = 2 × 32 + 4 + 6 = 12 = 3 × 42 + 4 + 6 + 8 = 20 = 4 × 5 (1) What is the sum of N consecutive even numbers from 2? (2) Take n = 6 to verify whether the conclusion of (1) is correct
• 14. 8 / 3 = 30 = 24 / 3 = 4 / 3
• 15. (): 24 = 3 / 8 = 12 divided by () = () 24 / 8
• 16. (): 24 = 3 / 8-12 divided by () = 30 ()
• 17. Two percent plus one sixth plus one twelfth plus one twentieth What's one in 110?
• 18. One out of two plus one out of six plus one out of twelve plus one out of twenty plus one out of thirty
• 19. How much is half plus five sixths plus eleven twelfth plus nineteen twentieth? It must be a simple calculation and try not to divide
• 20. 12+56+1112+1920+2930+… +97019702+98999900．