Calculate 6.25 × 10^6 −4.73 × 10^6 . Express your answer in scientific notation to 2 decimal places.

Answer 1

To subtract these two numbers in scientific notation, we need to have the same powers of 10. We can do this by shifting the decimal point on the first number two places to the left.

6.25 × 10^6 - 4.73 × 10^6 = 0.625 × 10^7 - 4.73 × 10^6

Now we can subtract the numbers:

= (0.625 - 4.73) × 10^6

= (-4.105) × 10^6

Finally, we express our answer in scientific notation to two decimal places:

-4.105 × 10^6

Answer 2

Ill just say all the answers quickly:
1. 1.52 x 10^6
2. 4.1264 x 10^9
3. 2.26051 x 10 ^-2
4. 7.28
5. 3.9482 x 10^4