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# Word Problems Involving Percents

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Most sections have archives with hundreds of problems solved by the tutors. Lessons and solvers have all been submitted by our contributors! Numeric Fractions Decimal numbers, power of 10, rounding Operations with Signed Numbers Exponents and operations on exponents Divisibility and Prime Numbers Roman numerals Inverse operations for addition and multiplication, reciprocals Evaluation of expressions, parentheses. Square root, cubic root, N-th root Negative and Fractional exponents Expressions involving variables, substitution Polynomials, rational expressions and equations Radicals -- complicated equations involving roots Quadratic Equation Inequalities, trichotomy Systems of equations that are not linear.

Conic sections - ellipse, parabola, hyperbola Sequences of numbers, series and how to sum them Probability and statistics Trigonometry Combinatorics and Permutations Unit Conversion. As an example, measuring the lengths on my computer screen gives approximately For Yao Ming, place the following number of free throws above the bar with each of the following percentage marks below the bar: While I have no problem with fractional free throws made, your teacher might.

If you had many values to add or subtract, you could lessen the error this introduces by flipping a coin each time the last digit was 5 and round up if the coin was heads and round down if it was tails.

But I doubt your 6th grade math teacher cares about this minor point, so rounding up should be fine. Notice that I kept four significant digits for the approximation for the fraction but rounded it to three significant figures at the end.

This is because my measurement of the length of the bar was only accurate to three significant figures. By keeping one more significant digit in the all parts of the calculation leading up to the final answer, I avoid round-off error in the approximation of the fraction. Since these values are multiplied, my final answer can be no more accurate in terms of significant digits than that factor that has the least number of significant digits note that and also have only three significant digits, so if I could measure the length of the bar to an accuracy of Alisha appears to have divided each bar into 10 equal sections, instead of the 4 used in part A.

You can check to verify that they are equal length. For Yao, the number of shots corresponding to each percentage will be as follows: Proceed in the same was as you did in part A: Again, since it was calculated from measurements with two significant digits 12 and 15 , I round to that many significant digits at the end of calculations using them.

If we were to place a mark on the bar from part B, it would be at in my case where the length is I keep three digits for the result because we are not done using it yet, and I want to avoid round-off error in the final answer, so I keep one more significant digit 3 in this case , and remember to round the final result to only two significant digits at the end Doing the same for the others gives: To me, they mean the same thing.

Fraction mathematics A fraction from Latin: Ratio In mathematics , a ratio is a relationship between two numbers indicating how many times the first number contains the second. Fractions are used to express this idea more often than ratios. Because division is something you can do with numbers, it seems more natural, and it is easier to visually see how to do arithmetic add, subtract, multiply, divide, square, square root, raise to a power, etc. Want to banish typos and clarify confusing sentences?

Learn More at grammarly. You can take help from Helloclass App ask the the question with the pics of the problem Ratio, Rates, Percents and Proportions Sort by: More advanced ratio problem--with Algebra HD version. In this video, Salman Khan of Khan Academy solves an advanced ratio problem. Ratio problem with basic algebra new HD version.

In this video, Salman Khan of Khan Academy solves a ratio problem. Learning games, educational comics, reading activities, and more. Test how well you know fourth-grade math vocabulary. In this video, Salman Khan of Khan Academy solves another ratio problem.

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Homework Help for Percentages. A percentage represents a fraction with as the denominator. Percentages are written using the percent sign (%). For instance, the fraction 50/ is written as 50%, and the fraction 8/ is written as 8%.