write the scientific notation
1) for 25,000,000
i got: 2.5 x 10^7
2) 4,562,000,000
i got: 4.562 x 10^9
3) 1,250 x 10^5
im stuck on this one
i think its: 1.25 x 10 ^ 8
are these right?
Oh yeah my math teacher taught this to us already. The first 2 are correct. For the last one I don't know. Ask the teachers they will help.
All 3 are correct
5000,000km
Let's go through each number to determine the correct scientific notation:
1) For 25,000,000: To express this number in scientific notation, we need to move the decimal point to the left until there is only one non-zero digit to the left of the decimal point. In this case, we move the decimal point 7 places to the left. The resulting number is 2.5. Multiplying this by 10 raised to the power of 7 gives us 2.5 x 10^7. So, your answer is correct.
2) For 4,562,000,000: Similarly, we need to move the decimal point to the left until there is only one non-zero digit to the left of the decimal point. In this case, we move the decimal point 9 places to the left. The resulting number is 4.562. Multiplying this by 10 raised to the power of 9 gives us 4.562 x 10^9. So, your answer is correct.
3) For 1,250 x 10^5: This number is already in scientific notation. The part before the multiplication symbol represents the coefficient, which is 1.25. The part after the multiplication symbol represents the power of 10, which is 5. So, in scientific notation, it is correctly expressed as 1.25 x 10^5. Your answer is correct.
Well done! Your answers are all correct.