1. (7 + 4 √ 3) (2 - √ 3) ^ 2 2. √ (1 / 25) ^ 2 - (2 / 5) ^ 2 3. √ 80 * √ 5 - √ 50 * √ 2 4. √ 4 / 3 ÷ 3 / 2 * √ 9 / 8

RELATED INFORMATIONS

• 1. (1) 14-50% of 9 / 2-5 / 1 (2) 7 × 80% - 1 × 80% - 0.25 × 80% of 8 / 8
• 2. 5 of 6.5-2 =? 3 of 7 times 2.1 equals? 3-1 and 5 of 8 equals? 80% + 1 of 5 equals? 2 of 3-50% equals? 4 of 7 divided by 80%?
• 3. (1) how many meters is 15% more than 36 meters? (2) how many meters is 15% less than 36 meters? (3) how many meters is one fourth more than 36 meters? (4) How many meters is one fourth less than 36 meters?
• 4. 4 / 5 of a number is 2 / 3 of 36. How much is this
• 5. 3 / 5 of a number is 9 / 10. What's the number?
• 6. 1. Three fourths of a number is 15. What's nine tenths of it? 2. One third of a number is equal to two fifths of three fourths Please make a formula
• 7. What is the sum of a number and 3 / 10, which is equivalent to 45% of 7 / 9
• 8. ）1 / 90, (), (). Find the rules and fill in the numbers!
• 9. Using the equation, 20% of 7 / 8 is equivalent to 14 / 15 of a number. What is the number
• 10. 14 out of 15 × 8 = (7 + 1) × 14 out of 15 (important process)
• 11. Fill in the numbers according to the rules: 89, 23, 12______ 、932、______ ．
• 12. What is the number of line 8 of the Leibniz triangle from the third position on the left?
• 13. What is the third number on the left of the tenth line of the Leibniz triangle?
• 14. What is the number in the third position from the left of line 40 of the Leibniz triangle? Hope to be able to give reasons
• 15. The famous Leibniz triangle in the world, as shown in the figure, is the number in the eleventh row from the right to the third position? Fig.1/1 1/2 1/2 1/3 1/6 1/3 1/4 1/12 1/12 1/4 1/5 1/20 1/30 1/20 1/5 1/6 1/30 1/60 1/60 1/30 1/6 1/7 1/42 1/105 1/140 1/105 1/42 1/7 . Find the number in the eleventh row from the right to the third position
• 16. The famous Leibniz triangle in the world is shown in the figure. The number on the third position from the left is () A. 1132B. 1360C. 1495D. 1660
• 17. -1 2 - 3 4 - 5 6 - 7 8 - 9 10 - 11 12 - 13 14 - 15 16 according to this rule, number 2010 from the left should be in several rows and columns
• 18. Find the rules: first line: 1, second line: 2, 3, third line: 4, 5, 6 According to the above arrangement The third number from left to right in line n (n > = 3) is
• 19. The numbers of 1, - 1 / 2,1 / 3, - 1 / 4,1 / 5, - 1 / 6 are arranged as follows according to certain rules: the first line is 1, the second line is - 1 / 2 1 / 3, the third line is - 1 / 4 1 / 5 - 1/ 0 - 14 days and 23 hours to the end of the problem The numbers 1, - 1 / 2,1 / 3, - 1 / 4,1 / 5, - 1 / 6 are arranged as follows according to certain rules, First line 1 Second line - 1 / 2 1 / 3 The third line - 1 / 4 1 / 5 - 1 / 6 The fourth line 1 / 7 - 1 / 8 1 / 9 - 1 / 10 The fifth line 1 / 11 - 1 / 12 1 / 12 - 1 / 14 1 / 15 ………… ……………… ………… So, can you write seven numbers from left to right on line 199? Be more specific. I'll hand it in tomorrow
• 20. The first line: 1, the second line: 2, 3, the third line: 4, 5, 6, the fourth line: 7, 8, 9, 10. According to the law, what's the last number in line 10000? The teacher asked us: the first line: 1, the second line: 2, 3, the third line: 4, 5, 6, the fourth line: 7, 8, 9, 10. According to the law, what is the last number in the 10000 line?