Less Than
In math, "less than" is a comparison between two numbers, where one number is smaller than the other. The symbol used to represent "less than" is <, which looks like an open mouth facing towards the smaller number.
For example, if we have the numbers 4 and 7, we can say that 4 is less than 7, which can be written as 4 < 7.
Here's another example: 10 is less than 15, which is written as 10 < 15.
When comparing numbers, it's important to remember that the smaller number always comes before the < symbol, and the larger number comes after it. So, 3 < 8 is correct, but 8 < 3 is not true.
[Less Than] Related Worksheets and Study Guides:
.◂Math Worksheets and Study Guides Third Grade. Adding Money
Study Guide
Adding Money 
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Adding Money Worksheet/Answer key
Adding Money Worksheet/Answer key
Adding Money Worksheet/Answer key
Adding Money
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The resources above cover the following skills:
Algebra (NCTM)
Use mathematical models to represent and understand quantitative relationships.
Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.