Write the three rules the students are taught for solving simple percentage problems. What are the students taught to do with these rules?
What will be an ideal response?
The students are taught that if the problem asks for 100%, then the answer is the same as the number being multiplied (100% × 20 = 20). Likewise, if the percent is more than 100%, the answer is more than the number being multiplied; if less than 100%, the answer is less than the number being multiplied. Students then use the rules to predict the answers to numerical problems.
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