Understanding Tens and Ones
Learning Objective
I can show that I understand that the two digits of a two-digit number represent amounts of tens and ones.
Key Concepts
Our number system is called ‘base 10’ because it uses ten different symbols called digits for counting.
The number place to the left of the ones place is called the tens place, and it counts groups of ten.
The number PLACE that a digit is in determines its VALUE, and writing a number in ‘Expanded Form’ shows the combination of different groups.
Practice Questions
This lesson includes 3 practice questions to reinforce learning.
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1. What does the digit in the tens place represent in a two-digit number?
2. If you have 23 apples, how many groups of ten apples do you have, and how many single apples are left?
3. Which of the following numbers has 4 in the tens place?
Educational Video
Math Antics - Place Value
mathantics