This math topic focuses on calculating the percent reduction of a number by multiples of 10%, serving as an introductory concept to percentages. The problems require understanding how to decrease a given number by 10%, 20%, or 30%, and identifying the resulting value from a set of multiple-choice answers. Each question provides initial guidance by mentioning the value of 10% of the number, which reinforces the computation concept of finding a percentage of a given number.
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Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Calculate the final number when it changes by a percentage
10% of 40 is 4.
What is 30% less than 40