Michael V. answered 02/07/19
Retired military service member with 10+ years teaching experience
Stacy,
Remember when you first learned to count? You counted by ones right? Like this, 1,2,3,4,5....
Later, you learned how to count by multiples of 2, like this, 2,4,6,8,10....
For this problem, just count by multiples of 4 and 6 and then look for the common multiple. Like this,
The multiples of 4 are: 4,8,12,16,20,24...
The multiples of 6 are: 6,12,18...
Do you see the smallest number they both have in common is 12? So in 12 days, he will play both games on the same day.