HealthTap: Doctor answers on Symptoms, Diagnosis, Treatment, and More: Dr. Greer on how long after starting antibiotics for strep throat are you contagious: You are okay to return to daycare or school after 24 hours from completing first dose of medication. That being said, I don't think I'd kiss someone or share their cup until on meds for 3 days! Make sure to finish all your meds, though. HealthTap: Doctor answers on Symptoms, Diagnosis, Treatment, and More: Dr. Greer on how long after starting antibiotics for strep throat are you contagious: You are okay to return to daycare or school after 24 hours from completing first dose of medication.
1. Know what a percentage is. A percentage is a way to express a number as a part of a whole. To calculate a percentage, we look at the whole as equal to 100%.For example, say you have 10 apples (=100%). If you eat 2 apples, then you have eaten 2/10 Ã 100% = 20% of your apples and you are left with 80% of your original apples.. Know what a percentage is. A percentage is a way to express a number as a part of a whole. To calculate a percentage, we look at the whole as equal to 100%.
If you can find 10 percent of a number, you can use that to estimate other percentages. For example, you might not be able to calculate 15 percent of 250 without a calculator, but you can find 10 percent of 250 is 25 by moving the decimal point one space to the left. 20 percent would be twice that number, or 50.sing a Calculator. In order to use a calculator to calculate a percent, you'll need to first convert the percent to a decimal. To change an integer to a decimal, move the decimal point two spaces to the left.