It works in every case where you have multiplying and dividing, including fractions and percentages
but is objectively wrong
No it isn’t
detracts from understanding the topic properly
Enhances it actually
That’s why I teach percentages as the fractions they are.
Sounds like you’re only teaching as much as you understand. Try understanding more. Students love the tricks that make Maths easier, including this one.
Yes it is
It works in every case where you have multiplying and dividing, including fractions and percentages
No it isn’t
Enhances it actually
Sounds like you’re only teaching as much as you understand. Try understanding more. Students love the tricks that make Maths easier, including this one.