Tens and ones in a two-digit number
Of everything your child learns this year, place value may do the most to make later math make sense. Once your child sees 34 as 3 tens and 4 ones, a problem like 34 + 20 becomes 3 tens plus 2 tens, and later the written methods for adding and subtracting make sense instead of feeling like rules to memorize. In 2nd grade, the same idea grows to hundreds.
In this video, your child will learn to find tens and ones in 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
13 is 1 ten and ? ones
Example 2
What number has 3 tens and 15 ones?
Your child's turn
68 is ? tens and 8 ones
The three key steps
- 1Ten ones make one ten.
- 2The tens place tells how many tens.
- 3The ones place tells how many ones.
Mistakes to listen for
- Reading the 3 in 34 as three ones, so showing 34 with sticks means putting out 3 sticks and 4 sticks.
- Seeing 14 as one number to count up to, rather than as a ten and 4 ones.
- Treating the zero in 60 as nothing, so reading or writing 60 as 6.
The lesson shows every step, so your child sees why it works. Read our parent's guide to tens and ones in two-digit numbers →
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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 tens and ones in 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 tens and ones in 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 →
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Questions at your child's level, about five minutes a day, on tens and ones in two-digit numbers and whatever PK-5 skills they need to develop. Unlimited practice, free forever.
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