Question

8. Rewrite each of the following as an "ordinary” decimal

number.
a. 2.789 X 103
d. 4.289 X 101
b. 2.789 X 10-3
e. 9.999 X 104
c. 9.3 X 107
f. 9.999 X 10-5

Answer 1

To rewrite a number in ordinary decimal form, you move the decimal point to the right or left based on the exponent of 10.

Step-by-step explanation:

When rewriting a number in ordinary decimal form, you need to move the decimal point to the right or left, depending on the exponent of 10. For numbers with a positive exponent, you move the decimal point to the right by the number of places specified by the exponent. For numbers with a negative exponent, you move the decimal point to the left by the number of places specified by the exponent.

For example:

a. 2.789 x 10^3 = 2789 (move decimal point 3 places to the right)

d. 4.289 x 10^1 = 42.89 (move decimal point 1 place to the right)

b. 2.789 x 10^-3 = 0.002789 (move decimal point 3 places to the left)

e. 9.999 x 10^4 = 99990 (move decimal point 4 places to the right)

c. 9.3 x 10^7 = 93000000 (move decimal point 7 places to the right)

f. 9.999 x 10^-5 = 0.000009999 (move decimal point 5 places to the left)