1. What makes the statement true? 8^-2 =?

Question

A. 64
B. 16
C. -1/64
D. 1/64

2. What is the solution to (4 x 10^3) x (6 x 10^6), written in a scientific notation?
A. 24 x 10^9
B. 2.4 x 10^9
C. 24 x 10^18
D. 2.4 x 10^10

3. What is 0.000000512 written in a scientific notation?
A. 5.12 x 10^6
B. 512 x 10^5
C. 5.12 x 10^-6
D. 512 x 10^-5

4. What is 31/4 written as a decimal?
A. 6.75
B. 7.50
C. 7.75
D. 8.25

5. What is 2.28 x 10^-8 in standard form?
A. 228,000,000
B. 22,800,000
C. 0.0000000228
D. 0.00000228

6. Jessica went to the mall and used 1/6 of her money on lunch. What is the fraction of her money expressed as a decimal?
_
A. 0.6
_
B. 0.7
_
C. 0.16
_
D. 0.17

7. Ashley is making cookies. The recipe calls for 3/4 of a cup of sugar. She needs to make 5 batches of cookies. How many cups of sugar does Ashley need?

A. 3 cups
B. 3 1/4 cups
C. 3 1/2 cups.
D. 3 3/4 cups

Answer 1

I forgot to mark my answers!

1.
A. 64?

2.
C. 24 x 10^18?

3. B. 512 x 10^5?

4. C. 7.75?

5. D. 0.00000228?

6. C. 0.16?

7. D. 3 3/4 cups?

Answer 2

1. wrong
2 and 3 and 5 -- I don't know
4. right
6. wrong
7. right

Answer 3

6 is d

Answer 4

Lilith is incorrect. 1. is 1/64 because 8^-2 = a decimal that turns out to be a fraction of 1/64 :) I forget the decimal though, sorry. just do 1/64 on a computer. I know this is a little outdated, but it can help other students looking for help on this question.

Answer 5

Thanks Anonymous you are smart and 100% correct

Answer 6

TEACHER NOT KNOWING AN ANSWER??????!!!
MIND BLOWING!!!

Answer 7

NO

Answer 8

Me being here in 2022-"Hello I am from the future" >w< lol