how many minutes does she have left

Question

Anne had 1 hour for lunch. she played for 3 fifth of an hour and read for 1 tenth of an hour. how many minutes did she have left to eat her lunch? what fraction of an hour was this. please put this in a grade 5 explanation.

 

Answer 1

To answer this problem, you need to find the common denominator of the two fractions.  3/5 and 1/10 are the numbers given. Multiply top and bottom of 3/5 by 2 to get 6/10. Now add the two fractions with common denominators together. 6/10 + 1/10 = 7/10. Anne spent 7/10's of an hour not eating, so she has 3/10's of an hour left to eat. Let me know if you need further explanation.