I have a math problem. How much is 0.11 times 0.99

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• 2. The composition of grade three should be no less than 300 words in autumn
• 3. How many numbers are the same for 1,4,7,10,..., 1000 and 1,11,21,31.1001?
• 4. 31/2-(-21/4)+(-1/3)-1/4-(+1/6)=
• 5. (1) How much minus 4 and 1 / 3 plus = minus 2? (2) how much minus 6 and 1 / 4 = 2 and 1 / 12?
• 6. Five out of eighteen times twenty-five out of twenty-seven is a simple calculation
• 7. 1 / 4 ＜ () < 1 / 3, 9 / 11 ＞ () > 8 / 11 Yueyue and her mother went to the fruit store to buy apples. My uncle said that 6 yuan could buy 4 kg apples. My mother asked if 5 yuan could buy 3 kg apples. My uncle thought about it and agreed with a smile. Yueyue was thinking: is it worthwhile for my mother to buy apples like this?
• 8. 0.4:0.12 2 / 3:0.8 4 / 7:5 / 12 simplification ratio
• 9. How much is 6 times 2 plus 8 minus 9 divided by 3? The person who wrote the question said that the answer was 7. How could it be 7? I calculated that it was 17
• 10. 6 yuan for a chicken, 3 yuan for a duck, 2 yuan for a watermelon, 1 yuan for 6 apples. How can I buy 100 things for 100 yuan
• 11. How to simplify the calculation
• 12. 63+72+（-96）+（-37）=?（-2.6)+(-3.4）+（+2.3) +1.5+(-2.3)=?
• 13. One plus 99 equals one
• 14. How much is 3.8 times 20 plus 37.5 times 0.8 plus 5.8
• 15. When 50x-2:1 is equal to 6 × 4:3, 7:2.8, 10:4:1 A factory used 630 kilowatt hours of electricity last month, 5% more than this month. How many kilowatt hours of electricity this month
• 16. How to solve the problem that x plus 3 / 3 x equals 12
• 17. 1.5 1 - (- 5 2) - 5 3 2. (- 2000 6 5) + (- 1999 3 2) + 4000 3 2 + (- 1 2 1)
• 18. -2000 and 5 / 6) plus (- 1999 and 2 / 3) plus 4000 and 1 / 6 plus 8 and 1 / 3 =?
• 19. Simple calculation: 101 × 24 / 25
• 20. 10.76-0.83 + 1.24-4.17 3.5/0.56 45 / 0.18 81.3-81.3x0.9