Split a number into two parts
Seeing that 7 can be 5 and 2, or 4 and 3, gives your child flexible ways to add and subtract instead of counting every time. It lets them use facts they know to work out ones they don't, such as solving 8 + 6 as 8 + 2 + 4 in 1st grade. Breaking numbers apart also helps with adding two-digit numbers in 2nd grade and, later, with multiplying larger numbers.
In this video, your child will learn to split numbers up to ten into parts.
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
3 + ? = 5
Example 2
5 = 1 + ?
Your child's turn
7 = 4 + ?
The three key steps
- 1Split the number into two parts.
- 2The two parts make the number.
- 3There is more than one way to split it.
Mistakes to listen for
- Finding one way to split a number, such as 5 = 4 + 1, and believing it is the only answer.
- Thinking 6 = 4 + 2 is wrong because they expect the answer to come after the equal sign.
- Losing or adding an object while splitting 8, ending with 5 and 4, and not checking the parts still make 8.
The lesson shows every step, so your child sees why it works. Read our parent's guide to splitting numbers up to 10 into two parts →
Is your child ready to practice what they've learned?
Bobby's Math Club offers unlimited practice for free.
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More Kindergarten Problem Solving, 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 splitting numbers up to 10 into two parts, 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 splitting numbers up to 10 into two parts 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 splitting numbers up to 10 into two parts
Questions at your child's level, about five minutes a day, on splitting numbers up to 10 into two parts and whatever PK-5 skills they need to develop. Unlimited practice, free forever.
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