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number sense and percents


mike mcgarry
lesson by mike mcgarry
magoosh expert

summary
the essence of the content revolves around developing number sense to efficiently handle percentages without the need for a calculator, emphasizing pattern recognition and mental math.
  • number sense is an intuitive understanding of numbers and arithmetic patterns, crucial for mathematical proficiency.
  • developing number sense involves curiosity and engagement with math, allowing for the recognition and application of numerical patterns.
  • a key strategy for handling percentages involves starting with finding 10% of a whole number, and sometimes 1%, to simplify calculations.
  • this method is presented as both a logical and creative approach, accessible to learners at different levels of mathematical comfort.
  • practical examples illustrate how to apply this method to solve percentage problems efficiently, encouraging practice without a calculator.
chapters
00:01
introduction to number sense
00:37
developing a strategy for percents
01:21
practical applications and examples
03:57
encouragement for practice