Adding Time using ancient menthod

 

Here is a nice simple way to add hours and minutes together

Let's add 5 hrs and 45 minutes and 2 hrs 35 minutes together.
What you do is this:

make the 5 hrs 45 minutes into one number, which will give us 545 and do the same for the other number, 2 hours 35 minutes, giving us 235
Now you want to add these two numbers together:

545
235
____
780

So we now have a sub total of 780.
Add the time constant of 40 with the subtotal.

No matter what the hours and minutes are, just add the 40 time constant to the sub
total.
780 + 40 = 820
so we can now see our answer is 8 hrs and 20 minutes!

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