Is the following expression written in scientific notation? If not, explain why.
3.25 + 10^-7
No, it should be multiplied, not added.
200
The mass of Jupiter is approximately 1,900,000,000,000,000,000,000,000,000 kg. Write the mass of Jupiter in scientific notation.
1.9 x 10^27
200
Is the following number written in scientific notation? Why or why not?
13.79 x 10^7
No, 13.79 is greater than or equal to 10.
300
The mass of a Monarch butterfly is about 9.5 x 10^-3. Write this number in standard form.
.0095
400
The size of the Sahara desert is about 3.629 x 10^6 square miles and the Arabian desert is about 9 x 10^5 square miles. Which desert is larger? Explain how you know.
Sahara, because the exponent is bigger.
400
Shelly's work is shown below:
(5^4)(5^-3) = 5
Is Shelly correct? Explain.
Yes, 4+-3 = 1. 5^1=5
500
The size of the four oceans, in square km, is shown below. List the oceans from smallest to largest.
Pacific Ocean: 1.7965 x 10^8
Arctic Ocean: 1.323 x 10^7
Atlantic Ocean: 1.061 x 10^8
Indian Ocean: 7.49 x 10^7
Arctic, Indian, Atlantic, Pacific
500
Is -2^8 the same answer as (-2)^8? Explain.
No, without parentheses () the answer will be negative, with them the answer will be positive.