How can finding the product of 5x700 help you check the product of 5x789?
Finding the product of 5x700 provides a benchmark for estimating the product of 5x789. Since 789 is close to 700, you can assume that 5x789 will be slightly more than 5x700. This allows you to quickly check your calculations for 5x789 by comparing it to the known product of 5x700, making it easier to verify accuracy.