Add up to four two-digit numbers
Totaling a list of numbers is math your child will use constantly: scores from several rounds, prices on a shopping trip, or minutes read across a week. Keeping every number in view and spotting pairs that make a ten builds organization and flexibility. They will need both for adding larger numbers and solving multi-step problems in 3rd grade and beyond.
In this video, your child will learn to add up to four two-digit numbers.
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
26 + 37 + 14 = ?
Example 2
23 + 17 + 31 + 39 = ?
Your child's turn
24 + 16 + 35 + 29 = ?
The three key steps
- 1Start by adding the ones.
- 2Look for a ten.
- 3Then the tens, and any new tens.
Mistakes to listen for
- Leaving out one of the numbers partway through, especially with four, so the total comes out short.
- Forgetting to regroup when the ones make more than 9, writing all of 15 in the ones place.
- Adding strictly left to right and missing easy pairs, such as 36 and 14 making a friendly 50.
The lesson shows every step, so your child sees why it works. Read our parent's guide to adding up to four two-digit numbers →
Is your child ready to practice what they've learned?
Bobby's Math Club offers unlimited practice for free.
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More 2nd grade 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 adding up to four two-digit numbers, 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 adding up to four two-digit numbers 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 adding up to four two-digit numbers
Questions at your child's level, about five minutes a day, on adding up to four two-digit numbers and whatever PK-5 skills they need to develop. Unlimited practice, free forever.
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