Alternatively, divide the number by 10 and then double it. To calculate 20% of a number, divide it by 5. To calculate 80% of a number, divide the number by 10 to get 10% and then multiply this by 8.Ĩ0% is 10% multiplied by 8. To find 40% of a number, divide it by 10 to find 10% and then multiply this by 4. Here is another example of finding a multiple of 10 percent. Now that we have 10%, we simply multiply it by 3 to find 30%. Here is a poster showing how to find all of the multiples of 10% of a number.įor example, to find 30% of 50, divide 50 by 10 to find 10% and then multiply this by 3 to get 30%. To find multiples of 10% of a number, use these rules: 10% is a very useful percentage to know how to find because we can easily multiply 10% to find other multiples of 10%, such as 20%, 30% etc. You can also multiply the number by 0.1.ġ0% is a basic percentage because it can be found with one simple division. To find 10% of a number with a calculator, divide the number by 10. The easiest way to do this is to move the decimal point 1 place to the left. To find 10% of a number without a calculator, divide the number by 10. To teach 10%, we can show 10 squares shaded out of 100 squares.ġ0% means 1/ 10 and so, finding 10% of a number means to find 1/ 10 of that number. 10% is the same as the fraction 10/ 100, which simplfies to 1/ 10. The easiest way to do this is to move the decimal point one place to the left. To calculate 10% of a number, divide the number by 10. You can also multiply the number by 0.05.įinding 5% is best to introduce after you have already learnt how to find 10%. To find 5% of a number with a calculator, divide the number by 20. The easiest way to do this is to divide by 10 and then halve the result. To find 5% of a number without a calculator, divide the number by 20. ĥ% means 1/ 20 and so, finding 5% of a number means to find 1/ 20 of that number. 5% is the same as the fraction 5/ 100, which can be simplified to 1/ 20. For example, 5% of 40 = 2.ĥ% means 5 out of 100. This can be done by dividing the number by 10 and then halving it. To find 5% of a number, divide the number by 20. Simply multiply the percentage required by the value of 1%. 1% is a very useful percentage to know how to find because you can use it to find any larger, whole number percentage of a number. You can also multiply the number by 0.01.ġ% is a basic percentage because it can be found with one simple division. To find 1% of a number with a calculator, divide the number by 100. The easiest way to do this is to move the decimal point 2 places to the left. To find 1% of a number without a calculator, divide the number by 100. To teach 1%, we can show 1 square shaded out of 100 squares.ġ% means 1/ 100 and so, finding 1% of a number means to find 1/ 100 of that number. To divide by 100, move the decimal point two places left. To calculate 1% of a number, divide the number by 100. Start by introducing the following percentages first: 10%, 20%, 25%, 50%, 75% and 100%. To teach how large a percentage is, you can show the percentage as a fraction of 100 squares. To find 50% of a number, simply half it.īefore looking at larger percentages, it is best to introduce basic percentages with a visual guide to how large they are. For example, 50% means 50 out of 100, which is half. To introduce percentages, it is best to start with simple percentages and showing them as a fraction out of 100. Here is a poster showing how to calculate basic percentages. 31% is not a simple percentage we would need to calculate 30% and 1% and add them together. They do not require any addition of any smaller percentages.įor example, 50% is a simple percentage because we simply divide by 2 to find it. Simple percentages are percentages of amounts that can be found with a simple division or multiplication. To find the percentages of a number shown in the table above, simply divide the number using the rules provided. The rules for finding simple percentages of a number are shown in the following table: Rules for Finding Simple Percentages of a Number
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