10 Questions
What is the fundamental principle behind the trick of calculating percentages by flipping the numbers?
The commutative law of multiplication
If you want to calculate 48% of 50, what calculation would you do instead using the trick?
50% of 48
What is the result of flipping 16% of 25 using the trick?
4
Why can the trick be extended to larger numbers?
Because the commutative law of multiplication applies
What is the benefit of using the trick to calculate percentages?
It reduces the complexity of the calculation
What is the result of flipping 44% of 150 using the trick?
66.6
Why does the trick work for calculating percentages?
Because the order of multiplication doesn't matter
What is the result of flipping 60% of 75 using the trick?
75% of 60
Which of the following is an example of using the trick to calculate a percentage?
Calculating 25% of 16
What is the trick used for?
Calculating percentages
Study Notes
- The text discusses a trick for calculating percentages more easily by flipping the numbers around.
- The trick is based on the commutative law, which states that the order of multiplication doesn't matter.
- The example given is 16% of 25, which can be flipped to 25% of 16 and calculated as 4.
- The text provides additional examples to practice the trick: 48% of 50, 60% of 75, and 44% of 150.
- The trick can be extended to larger numbers by flipping the percentage and the value being calculated.
Learn a helpful trick for calculating percentages by flipping the numbers around based on the commutative law. Practice with examples like 16% of 25, 48% of 50, 60% of 75, and 44% of 150. Extend the trick to larger numbers by swapping the percentage and value to simplify calculations.
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