Lesson: Ten More and Ten Less: Numbers up to 100 Elementary School Mathematics 1st GradeMathematics
In this lesson, we will learn how to find ten more or ten less than any number up to 100 and investigate how the number of tens and the number of ones change.
Sample Question Videos
Find 10 more than 20. Use the base ten blocks to help you.
Find the two-digit number and then find 10 more.
Which picture shows 26?
Now, find 10 more than 26.
We can use number bonds to ten to help us find 10 more than any tens number.
If we know that , we also know that .
We have just made the numbers bigger by 10.
Use number bonds to help you find 10 more than 80.