5. Estimate
   

To estimate , you can round to a nearby friendly number, like . Now your estimation is , which equals . This gives you a quick way to gauge that the actual product will be close to this number, making mental math easier!

Now, let’s take a moment to reflect on the power of estimation in your daily life! When shopping, for instance, estimating your total expenses can save you from overspending. Rather than calculating exact costs, rounding prices can help you make swift budget decisions without a calculator—perfect for when you’re juggling that shopping cart!