When solving sequential division problems like 20 ÷ 15 ÷ 10 ÷ 5, convert each division to fraction form (20/15 ÷ 10/1 ÷ 5/1), then apply the KCF rule (Keep the first fraction, Change division to multiplication, Flip the second fraction) to transform the expression into multiplication of fractions, simplify by canceling common factors, and multiply to find the final answer (2/75).
Deep Dive
Prerequisite Knowledge
- No data available.
Where to go next
- No data available.
Deep Dive
That is The Reason Most People Get Confused to Solve!Added:
Hello my friends. Today I have this example for you.
20 divide on 15 divide on 10 divide on five.
Only we have here division sign division operation. And you know when you have only one operation they are in same order for the calculation.
It means when you are facing it this cases you have to start from the left side and then step by step goes to the right side.
So, we only have a start only have to start from here 20 over 15.
You can write only in a have a write it like a fraction.
Then division sign 10 and the rest one here.
But you know 10 is 10 over one and five is five over one.
They all have a fraction form.
And you know when you have fractions divide on each other you have to respect the rules for KCF.
KCF means K stands for keep the first fraction because we are starting from these two fractions.
This fraction divide on this fraction.
K stands for keep unchanged the first fraction so I write it 20 over 15 unchanged.
C stands for changing the division sign to the multiplication.
Then F stands for flip the second fraction. It means inversion inversion of this fraction. 10 over 1 gives us 1 over 10.
And for the second fraction, second pair of fractions, we only have or we only have to respect to this rule again.
First fraction unchanged because now we have 1 over 10, okay? Then division to the multiplication.
And the second fraction should be inverse or flipped.
5 over 1 gives us 1 over 5. So, everything now is very simple.
We only have to simplify them and multiply each other and we have the last answer.
10 and 20 can be simplified.
This one just gives us a one and this one gives us a two.
Not other.
We have a nothing for simplified, so for the numerator we have a two.
And for the denominator we have a 15 * 5. Gives us 75.
Yes, 75. 2 over 75 is the last answer of this calculation. Please write me here your way, your answers.
And please don't forget to subscribe my channel. You can find a lot of interesting problems from the easy one to the difficult one every day, every week.
Thank you for your attention.
Related Videos
A Number Plus 5 Is 12
MathGirlTutor
101 views•2026-06-03
Olympiad Mathematics | Indian | Can You Solve This One?
PhilCoolMath
650 views•2026-06-03
Escaping the Fog
LogicLemurGaming
760 views•2026-06-03
H2 Math June Holiday 2026 Intensive Revision | H2 Math Tuition by Achevas #singaporemath #h2math
AchevasTV
304 views•2026-06-01
A Brutal Radical Expression Made Easy! The Shortcut Changes Everything.
tamoshop
112 views•2026-06-02
V : jee main /advance class 11 mathematics : Binomial Theorem class-1 ( 29 may 2026 )
dcamclassesiitjeemainsadva9953
125 views•2026-05-29
Is This Pentomino Tileable?
3cycle
241 views•2026-05-30
This Sudoku Has Many Lines!!
CrackingTheCryptic
2K views•2026-05-29











