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Math--time

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how do u add and subtract time....
ex.
Math class is dismissed at 2:20pm ,It is now 1:53pm how many more minutes before math class is dismissed.



It is a subtraction, but remember each hour is 60 min.

2:20
- 1:53

but you cant subtract 53 from 20, so you borrow..
1:80
-1:53

and the answer is 27 minutes.

  • Math--time - ,

    25 minutes

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