Comparing Numbers Worksheets However, one of the most challenging aspects of comparing two numbers is knowing which symbol to use at what time. Students find it hard to solve them. However, to solve them successfully, we have a trick that can help you solve them. For instance, you have two numbers, 3.5 and 6.7. 3.5 < 6.7. The above inequality shows that 3.5 is less than 6.7.