Answer:
1a. 12% = 0.12
1b. 18.6% = 0.186
1c. 2.5% = 0.025
Explanation:
When converting a percentage, simply move the decimal point, two spaces to the left! Remember, "cent," means 100. So, that's two zeros. So, move your decimal point two zeros to the right.
12.0% = 0.12
18.6% = 0.186
02.5% = 0.025%
(The added zeros, on the left side of the equal signs, are just to show the decimal movement)