rewrite in scientific notation?

Question

1) 0.00089
2)0.00000678
3)0.0642
4)3,240,222
5)41,950,000,000
6)612,000

Answer 1

Take the first number and put it in front of a decimal point. The other numbers follow.

8.9

Multiply that by 10^x

x is the number of places you have to move the decimal place. If you move it to the right, x is negative. If you move it to the left, x is positive.

0. 0 0 0 8.9
. . 1 2 3 4 (to the right, so negative)

8.9 * 10^-4

3. 2 4 0 2 2 2 .
. . 1 2 3 4 5 6 (to the left, so positive)

3.240222 * 10^6

You should be able to do the rest now.

Answer 2

1. 8.9 x 10^-4
2. 6.78 x 10^-6
3. 6.42 x 10^-2
4. 3.240222 x 10^6
5. 4.195 x 10^10
6. 6.12 x 10^5

I expect money in the mail.

Answer 3

1) 8.9 * 10^-4
2) 6.78 * 10^-6
3) 6.42 * 10^-2
4) 3.240222 * 10^6
5) 4.195 * 10^10
6) 6.12 * 10^5

Answer 4

1)8.9 e-4
2) 6.78 e-6
3)6.42 e-2
4) 3.24 e6
5)4.195 e10
6)6.12 e5