This math topic focuses on determining the whole number when given a specific value that represents a certain percentage of that number. The skill practiced involves finding the base number from a known percentage (30% and 10%), requiring an understanding of foundational percentage calculations. This activity is situated in a broader introductory unit on percentages and involves solving problems such as "18 is 30% of what number?" or "6 is 10% of what number?", with choices provided for each problem to select the correct answer.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Find what the full number is for the given percent
1 is 10% of a number