How much is fifteen kilos

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• 1. How to calculate how many tons is a square stone? How to calculate how many is a single stone? Carved stone
• 2. 400m = [] km, reduced to the simplest fraction
• 3. How many square meters is 200 meters wide by 200 meters long?
• 4. How many kilometers is 450 meters in fractions
• 5. First find the law, and then calculate "5 + 10 + 15 + 20 +... + 300 =? Please advise
• 6. A walks 20 meters per hour, B walks 30 meters per hour, C walks 40 meters per hour. Now a, B, C walks 300 meters at the same time. How many meters do a, B, C walk?
• 7. An engineering team works on a highway. In the first two days, it works a total of 1 km and 360 meters, and in the next three days, it works an average of 800 meters per day. How many kilometers does the engineering team work on a daily basis?
• 8. The school has 1000 students, of whom 11 / 20 are boys How many boys are there 2. How many girls are there 3. How many more boys than girls
• 9. Roman numerals 1 to 10, and 1001000, and so on, how to write ah, and 0
• 10. There are 300 science and technology books and story books in the book corner of class 6 (1), and the ratio of these two books is 4:6. How many story books are there? There are 300 science and technology books and story books in the book corner of class 6 (1), and the ratio of these two books is 4 to 6. How many story books are there? There are two ways to solve it!
• 11. One kilogram is equal to 2 jin, 0.6 kg is equal to how many jin? How to calculate?
• 12. 2100Kg = how many grams
• 13. How many grams does 0.47 Jin equal? How many grams does 0.75 Jin equal?
• 14. What is 2002 + 2004... 2050
• 15. How many days is 27000 hours?
• 16. How many days is 96 hours
• 17. Two and three fourths of an hour is minutes, hours and minutes
• 18. How many days is 1800 hours
• 19. 2008 is a leap year______ (judge right or wrong)
• 20. 1990, 1987, 1992, 1986, 1997, 1985, 1996, 1984, 2000, 2004 which are normal years and which are leap years