Step by step
The question
Question: change 2 days into minutes.
1 Find the links
There is no link straight from days to minutes.
So we go in steps.
1 day is 24 hours.
Then: 1 hour is 60 minutes.
2 Make the unit fractions
We want hours, so hours go on top.
We have days, so days go at the bottom.
Top and bottom are the same amount.
So the fraction is 1, and times 1 keeps the size.
Next minutes, so minutes go on top.
We have hours, so hours go at the bottom.
Careful!
Not upside down.
Then the days would not cross out.
3 Multiply
We multiply 2 days by the fractions.
Days and hours on top and at the bottom cancel, like numbers.
Cross them out.
Minutes are left.
What is left: 2 times 24 times 60.
2 times 24 times 60 is 2880.
So 2 days is 2880 minutes.
4 Check
Does it make sense?
Minutes are smaller than days.
So we need more of them.
2880 is more than 2.
Yes.
And back the other way: 2880 divided by 60 divided by 24 = 2.
We get 2 days again.
So the answer is right!
Let's look back.
First: find the links.
Then: make the unit fractions.
Then: multiply.
Last: check.