10000 meters is equal to? Cm? As the title!

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• 1. 5080300 km is equal to () billion km
• 2. How many billion kilometers is 98 billion kilometers
• 3. The approximate value of 2394.7 is rounded to the nearest ten and expressed by scientific notation______ ．
• 4. What is it to round 139500 to the nearest number and keep three significant numbers
• 5. Scientific counting method to retain significant numbers to be rounded?
• 6. 4770m, expressed by scientific counting method (two significant numbers reserved)
• 7. 384000000000 is represented by scientific counting method, with four significant digits reserved
• 8. Keep two significant numbers of 909070 and express them as______ ．
• 9. 301, 000 in scientific notation
• 10. (1) One million sheets of paper weighs 12.5 kg, and one of them weighs 12.5 kg_______ Gram (in scientific notation)
• 11. How many kilometers is 10000 meters
• 12. 256210960000 M = {} km = {} billion M = {billion km
• 13. How many meters is one nanometer
• 14. Steps from 1 meter to 1 nanometer. For example, how many decimeters is 1 meter equal to. All the way to nanometer
• 15. How many decimeters is one nanometer
• 16. How many nanometers is a millimeter?
• 17. How many billion kilometers is 1427 million kilometers
• 18. 11.69 trillion yuan in scientific counting?
• 19. 11 trillion yuan, expressed in scientific notation why?
• 20. Write the absolute values of the following numbers: 5 - 7 0 - 3.5 Write the absolute values of the following numbers: 5 - 70 - 3.5 minus two seventh, + 10000