Mental Math: 75 divided by 15

This video will help kids develop an understanding of division while building their mental math skills.

How to use this video with kids:
Step 1: Read the question out loud
Step 2: Pause the video to let kids think about how they would solve the question
Step 3: Watch the two solutions.
Step 4: Ask the kid(s) you're working with to tell you about their thinking, was it similar or different to the solutions in the video?

0:01 Solution 1 - 75 divided by 5 and then 75 divided by 3.
2:14 Solution 2 - changing it to a multiplication question 15 x ____ =75?

Tell us in the comments what strategies you used and what other videos you'd like to see!

[Well_Shady]

My 1st thought was to get rid of the the 5 part of the 75, so i subtracted 15 straight off the bat, leaving me with 60, then the ol' noggin started screaming there's 4 15's in that, plus the one you got rid of to make 5.

[samwong]

What the brain works is to search for memorable look up tables which are different from people to people. I can give you the answer five quickly because I memorise some results similar to the simple multiplication table.

[williewonka]

Solution 2 is how my brain works. If it was 80/5 it would be 5 with a remainder of 5 or 5/15