How much TV is OK for 7 year old?

How to calculate percentages easily on a calculator

Working out percentages on a calculator does not have to feel confusing or complicated. Whether you are shopping during a sale, figuring out a tip, or solving a math problem, the process is quick once you know a simple trick.

To find any percentage of a number, you can break it down into two easy steps. First, take your starting number and divide it by 100. This simple division tells you what 1 percent of that number is. For example, if you want to find 2 percent of 150, dividing 150 by 100 gives you 1.5.

Once you have the value of 1 percent, the final step is straightforward. Just multiply that result by the percentage you actually need. Sticking with our example, you take that 1.5 and multiply it by 2, which gives you 3. That means 2 percent of 150 is exactly 3.

This same method works for any percentage you encounter in daily life. If you need 15 percent of a number, divide by 100 and multiply by 15. By sticking to this reliable routine, you can skip the guesswork and get accurate answers every single time.

Read more →

Mastering percentage conversions made simple

Converting percentages into decimals and fractions is a handy math skill that pops up everywhere, from calculating discounts while shopping to figuring out your test scores. Once you get the hang of a few basic steps, it becomes second nature.

To turn any percentage into a decimal, all you have to do is divide the number by 100. For instance, taking 18% and moving the decimal point two places to the left gives you 0.18.

Switching that same percentage into a fraction is just as straightforward. Start by writing the percentage over a denominator of 100, which gives you 18/100. From there, you just need to simplify it by finding the greatest common factor for both numbers—in this case, 2. Dividing the top and bottom by 2 leaves you with the final simplified fraction of 9/50.

Read more →

How to easily calculate percentages

Working out a percentage might feel confusing at first, but it comes down to one simple formula that you can use anywhere, from shopping discounts to your latest school test scores.

To find a percentage, you just need to take the part you want to measure, divide it by the total whole, and then multiply that number by 100.

Imagine you got 18 answers right on a quiz that had 20 questions in total. Your part is 18, and your whole is 20. When you divide 18 by 20, you get 0.9. That final step of multiplying by 100 is what transforms that decimal into an easy-to-read 90 percent.

Without multiplying by 100, you are left with a decimal. While decimals are mathematically correct, they are much harder to compare quickly when you are looking at grades, tips, or sale prices.

Read more →