Reflection: Discourse and Questioning The 1% Benchmark - Section 1: Introduction

 

Some of my students started to make the conclusion that to find the percent of a number you divide by that percent.  They reason that since you can divide by 10 to find 10% you must be able to divide by 3 to find 3%.

To overcome this misconception, I find myself asking constantly for clarification on the meaning of 1%.  I might say 1% is what fraction of the whole?  or How many 1% equal 100%.  The bar model provided in the resource or even a hundredths grid can explain why 1% of a number is the same as dividing the number by 100.

  Why We Divide by 100
  Discourse and Questioning: Why We Divide by 100
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The 1% Benchmark

Unit 5: Percent and Proportional Relationships
Lesson 3 of 15

Objective: SWBAT solve percent problems using the 1% benchmark

Big Idea: Finding 1% of a number is simple. If you can find 1% of a number you can find any other percent.

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Standards:
Subject(s):
Math, Number Sense and Operations, Percentages, percent benchmarks, percent of, 1%
  50 minutes
onepercentbenchmark
 
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