Is the number  740,716,823  divisible by 11? Demonstrate how…

Is the number  740,716,823  divisible by 11? Demonstrate how to use the  DIVISIBILITY RULE FOR 11   to a 5th grader.   You only need to SHOW ALL THE WORK for the DIVISIBILTY RULE FOR 11, on your paper,  and how you decided that either YES or NO to being divisible by 11.  

A tour of the White House starts every 15 minutes. A tour of…

A tour of the White House starts every 15 minutes. A tour of the Capitol Building starts every 25 minutes.  a.  If the first tour of the day for both tours leaves at 8:30 am, how many minutes will pass until they leave at the same time again? [a] b.  If the first tour of the day for both tours leaves at 8:30 am, what TIME will they leave together again together? [b]