A percentage is just a fraction out of 100 โ you already know this idea from decimals. Drag the slider and watch the grid fill up to see it directly.
Try it: set the slider to 50 โ that's the same as one half.
"Per cent" means "out of 100." A percentage is just a special way of writing a fraction with denominator 100 โ instead of writing 45/100, we write 45%. You already know how to write this as a decimal too: 45% = 0.45.
Read as "25 per cent."
Divide by 100, then simplify.
Move the decimal point two places left.
Since percentages are all "out of 100," you can compare them directly, just like whole numbers. 65% is bigger than 40%.
Is 3/5 bigger than 55%? Convert 3/5 to a percentage: 3/5 = 60/100 = 60%.
60% is bigger than 55%, so 3/5 is bigger.
Find 10% of โน250. 10% means dividing by 10.
10% of 250 = 25
Find 30% of โน250. Since 30% = 3 ร 10%, and 10% of 250 is 25:
30% of 250 = 3 ร 25 = 75
A class has 40 students. If 25% of them play chess, how many students is that?
25% = ยผ, so ยผ of 40 = 10 students
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