3 / 5 - (1 / 2-1 / 4) 3 / 10 + 1 / 5-1 / 3 3 in 5 - (1 in 2-1 in 4) 3 in 10 + 1 in 5-1 in 3, 8 in 9 - (1 in 6 + 1 in 3)

RELATED INFORMATIONS

• 1. Calculate a ^ 3 * (1 / a) ^ 2
• 2. What is a ^ 2 + A + 1-A ^ 3 (A-1)?
• 3. Calculation (a + 1) (a + 2) (a + 3) (a-6)
• 4. Using two methods to calculate (a + 3) ^ 2 - (A-1) ^ 2
• 5. 1 / 2 - (2 / 3-1 / 4)
• 6. Calculate 1 + 2 + 2 ^ 2 + 2 ^ 3 + 2 ^ 4 +. 2 ^ 63
• 7. Calculation: (3 × 10-5) 2 △ (3 × 10-1) 2
• 8. ① Calculation [1 / (1 × 2)] + [1 / (2 × 3)] + [1 / (3 × 4)] + ＋[1／（10×11）]. ② Using the thinking of the above question to calculate: {1 / [a (a + 1)]} + {1 / [(a + 1) (a + 2)]} + {1 / [(a + 2) (a + 3)]} + +The value of {1 / [(a + 2008) (a + 2009)]} + {1 / [(a + 2009) (a + 2010)]}
• 9. 8 x (- 2) x (- 4) x 1 x (- 3) calculation
• 10. Calculation: (1 + 10 / 1 × 1) + (1 + 10 / 1 × 2) + (1 + 10 / 1 × 3) + +(1 + 10 / 1 × 9) + (1 + 10 / 1 × 10)
• 11. Calculation: - 1 + 2-3 + 4-5 + 6-7
• 12. Calculate (- 2) ^ 5, (- 3) ^ 5, (- 1 / 2) ^ 5
• 13. How much% d% a is it equal to [2.5:3] + [3.4:1] + [3.5:2] + [+ 2.4:3] + [- 1.2:1] + [+ 1.3:1]
• 14. Calculate the value of (2 × 3 × 4 × 5) × (1 / 2 + 1 / 3 + 1 / 4 + 1 / 5) To calculate the value of (2 × 3 × 4 × 5) × (1 / 2 + 1 / 3 + 1 / 4 + 1 / 5), simple calculation is required!
• 15. Calculate the sequence, - 1, - 1 + 3, - 1 + 3-5, - 1 + 3-5 + 7 respectively From this, we can guess that: an=-1+3-5+… +The result of (- 1) ^ n (2n-1) is proved by mathematical induction
• 16. "Calculate the sequence 1,1 + 2 + 1,1 + 2 + 3 + 2 + 1,
• 17. 2 + 3 + 4 + 5 +. + n-2 =? How to calculate this sequence?
• 18. It is known that the image with inverse scale function y = m-5 △ x is in quadrant 2 and quadrant 4, and the value range of TM is in quadrant 2 and quadrant 4
• 19. If M (A-2, - A + 3) is in the third quadrant, then the value range of a is ()
• 20. Given that the point m (- 35-p, 3 + P) is the third quadrant, then the value range of P?