Estimating Addition and Subtraction of Decimals Using Smart Rounding

This lesson teaches how to estimate the addition and subtraction of decimals using smart rounding. It begins with a review of rounding basics, then introduces smart rounding, which involves rounding to familiar numbers for easier calculations. The lesson includes examples with whole numbers and decimals, demonstrating how to apply smart rounding in various scenarios. The concept of relating decimals to fractions and money is also explored to aid understanding.

What is the estimated result of adding 3.65 and 4.10 using smart rounding?

Describe the process of smart rounding for the subtraction of 8.59 and 7.30.