The last number tells how many
This is the moment counting starts to mean something for your child: the last number said is the answer to "how many?" Without it, a child can recite a count and still not know what it tells them. The idea sits under comparing, adding, and taking away in kindergarten, and knowing a total stays the same when objects are rearranged later helps your child see that 3 + 2 and 2 + 3 both make 5.
In this video, your child will learn to find how many from the last number.
The lesson stops at each question for your child's answer.
Three problems, each a little harder
Each problem is worked step by step. Your child will solve the last one before Bobby shows how.
Example 1
How many dots?
Example 2
How many flowers?
Your child's turn
How many cars?
The three key steps
- 1Count each one just once.
- 2The last number tells how many.
- 3Moving them, or starting somewhere else, doesn't change how many.
Mistakes to listen for
- Counting the group again from one when you ask how many, instead of giving the last number.
- Thinking a spread-out row of five buttons has more than a tight row of five, because it looks longer.
- Expecting a different total when the count starts from a different object, and being surprised when it matches.
The lesson shows every step, so your child sees why it works. Read our parent's guide to the last number counted tells how many →
Is your child ready to practice what they've learned?
Bobby's Math Club offers unlimited practice for free.
Join the clubMore kid-friendly lessons
More Pre-K Numbers & Place Value, with questions your child answers along the way.
Questions parents ask
Does my child need an account to watch?
No. You can watch this on any device at any time. If your child would like to practice the last number counted tells how many, and you'd like parent-friendly reports on your child's progress and growth, you can join Bobby's Math Club for unlimited free practice.
What happens when my child answers a question?
A right answer gets a cheer, and the lesson carries on. If your child isn't sure, they can tap "I don't know yet", and Bobby gives the answer and shows another example. Nothing is scored or stored.
Is this the same lesson that's on YouTube?
Yes. Here, the lesson stops at each question and waits for your child to answer. On YouTube, each question stays on screen for a few seconds, and then the lesson plays on.
Where can I learn more?
There's a short, kid-friendly lesson like this one for every Pre-K to 5th grade math skill, all in our video library. Our parent's guide to the last number counted tells how many has more on where kids get stuck and how you can help at home. In the club, your child practices at just the right level, about five minutes a day, and you get parent-friendly reports as they grow. Learn more about how it works →
Practice the last number counted tells how many
Questions at your child's level, about five minutes a day, on the last number counted tells how many and whatever PK-5 skills they need to develop. Unlimited practice, free forever.
Join the club