Percent Problems Practice — Percent of a Number & More

Choose the percent practice you need

Easy asks for a percent of a number using 10%, 25% and 50%. Medium also asks what percent one number is of another. Hard adds finding the whole and some decimal percentages, including 12.5%.

1. Identify what you know: the part, the whole, or the percent. Write the percent as a decimal before calculating.
2. Enter your answer and use Check, or press Enter in the answer box. When the % symbol is already shown, enter the percent number: for 25%, type 25.
3. Read the worked steps, then choose Next problem. Skip shows the solution and resets the current streak; it does not count as an answered question.

The activity generates new problems and stores your answered/correct totals, best streak, badges and selected difficulty in this browser. The current streak starts again when the page reloads. Clearing browser storage can remove saved totals. A streak is practice feedback, not proof that you have mastered every percent problem.

Use one equation for three percent questions

Part = (percent ÷ 100) × whole. Decide which quantity is missing before choosing multiplication or division. These original examples show the method; they are separate from the generated activity.

Find the part

What is 30% of 90? Write 30% as 0.30, then multiply: 0.30 × 90 = 27. Check: 30% is less than half, so the answer should be less than 45.

Find the percent

18 is what percent of 72? Divide the part by the whole and multiply by 100: (18 ÷ 72) × 100 = 25%. Check: 18 is one quarter of 72.

Find the whole

42 is 35% of what number? Divide the part by the decimal percent: 42 ÷ 0.35 = 120. Check by multiplying: 0.35 × 120 = 42.

Avoid rounding the percent too early

12.5% = 0.125, not 0.13. Keep the full decimal while calculating. If you divide to find a percent, multiply the quotient by 100; a quotient of 0.25 means 25%.

Need another explanation? Read the percent problems lesson before returning to practice. This activity focuses on part, percent and whole; it does not generate percent-change word problems or simulate a complete SAT section.

Continue with worksheets and a wider review

For written practice, open the Grade 6 percent worksheets and choose Percentage Calculations or Percent Problems. These skills relate to the Grade 6 percent standard: treating a percent as a rate per hundred and finding a whole from a part and percent.

For a broader learning path, the Grade 6 Math Online Center connects related ratio, fraction, decimal and percent lessons with other review tools. Choose a book only if you want a broader structured review; check its actual preview and level first.

For your next short session, write down one specific correction, such as “divide by the decimal percent to find the whole.” Then try a fresh problem of that type and explain how you checked it.