Calculate 42% of 15:
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Calculate 42% of 15:
To solve the exercise, will begin by converting the percentage into a fraction:
We will then proceed to multiply the fraction by 15
In order to simplify this operation let's break down the 15 from the multiplication exercise as well as the 100 in the denominator for the multiplication exercise:
Take note that the five in both exercises can be reduced:
Furthermore we can also reduce the 2 in the numerator and the denominator:
6.3
Calculate 30 over 100 as a percentage:
Because 42% means "42 out of 100" or . You can't just multiply 15 × 42 because that would give you 42 whole units, not 42 percent!
Absolutely! Converting 42% to 0.42 is often easier: 15 × 0.42 = 6.3. Both the fraction method and decimal method give the same answer.
Breaking down numbers helps you cancel common factors and simplify calculations. Since 15 = 3 × 5 and 100 = 5 × 20, you can cancel the 5's to make the math easier!
Divide your answer by the original number: . Since 0.42 = 42%, your answer is correct! This reverse check always works.
Double-check your arithmetic! Common errors include forgetting to convert the percentage or making calculation mistakes. Remember: 42% of any number should be less than half that number.
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