10 to the 8th power divided by 10 to the 7th power is 10
10 to the power 8 divided by 10 to the power of 6 is 10 to the power of (8 - 2) which is 10 to the power of 2 or 100
486
1.39 times 10 to the 2nd power is 139
10 to the negative 12 power
20,000
3 x 10 to the 5th power + 3 x 10 to the 4th power + 2 x 10 to the 2nd power
10 to the 8th power divided by 10 to the 7th power is 10
8.2 x 102 ÷ 6.3 x 104 ≈ 1.302 x 10-2
10 to the power 8 divided by 10 to the power of 6 is 10 to the power of (8 - 2) which is 10 to the power of 2 or 100
0.8 divided by 10 to the second power = 0.08
10^2/10^5. Because both numbers have the same bases, simply subtract the exponents (the top from the bottom). Since 5 is bigger than 2, the remaining answer will be in the denominator. 1/10^3. However, you can also raise the number to the numerator by adding a negative to the exponent. 10^-3 is also acceptable, even recommended.
2 to the power of 20 divided by 4 to the power of 10 is equal to one.
381.8 divided by 10 to the fifth power equals 0.003818
486
0.8
1.39 times 10 to the 2nd power is 139