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The fifth grade math crash is 4÷2=2 4×0.5=2 8÷4=2 8×0.25=2. What are the rules here?
4÷2=2

4×0.5=2

(0.5= 1/2)

Yes: 4× 1/2=2.

8÷4=2

8×0.25=2

(0.25= 1/4)

Yes: 8× 1/4=2.

Law: Divide by an integer = multiply by one third of this integer.

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