Simple calculation of 12.71-4.85 + 3.29-1.15

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• 1. Simple calculation of 1.29 + 3.7 + 0.71 + 6.3
• 2. Simple operation: 7.29-2.71 square, 2.8 × 8 + 7.6 × 8-0.4 × 8
• 3. What operation law does 25 * 39 + 25 = 25 * (39 + 1) use?
• 4. According to the law of n (n + 1), the value of 100 + 102 + 104 + 106 +.. + 998 + 1000 is calculated,
• 5. 987 / 125 = 987 * 8 / 1000 = 7.896 what operation law is used
• 6. What operation law is used in 7.25/1.25/8 Primary school mathematics problems
• 7. 75 * 1.8 + 2.5 * 18 =? Calculated according to the law
• 8. Calculation: (- 2 and 3 / 4) + 1 and 2 / 3 + 0.75 + (+ 1 / 8) + (- 3.125)
• 9. A simple algorithm of 14 × 44 + 12 × 28 + 32 × 14?
• 10. 14*44+12*28+32*14
• 11. 125-2 and 1 / 4-
• 12. Simple calculation! 1.2.5 × 9.82.1.25 × 25 × 3.2 3.2.4-1.375 + 3 / 5, 4.3 / 1 △ 3 / 7 × 5 / 14
• 13. (3.75 + 4.1 + 2.25) × 9.8
• 14. 8/3*5+8/5*7+8/7*9+8/9*11…… +8 / 23 * 25 simple calculation, simple answer, points Oh
• 15. 8/3*5+8/5*7+8/7*9+8/9*11…… +Simple calculation of 8 / 23 * 25
• 16. Simple operation: 8 / 9 * [3 / 4 - (7 / 16-0.25)]?
• 17. On the inequality system 1 ≤ X & # 178; + X + K ≤ 2 of X, then the value of K is?
• 18. If the solution set of the system of inequalities x-3 ″ a, b-X ″ - 2 about X is x = 2B + A + 1, find the system of inequalities x-k ″ a, x + K
• 19. Given the function y = x (x-1) &# 178; (x + 3) &# 179;, find y ^ (6)
• 20. The factor is divided into 16-8 (X-Y) + (X-Y) 2 =___ ．