By rounding, scholars find that adding money amounts becomes a breeze! They round two and three-digit numbers (with decimals) in these addition problems to get approximate sums. For each, mathematicians write the new addition equation with the rounded numbers, filling in the sum in a designated space below it. They round to the nearest 10 and 100 dollars. There are 12 of these with a scaffolded format and eight more for learners to practice doing moer independently. As you review, consider designating a few "calculator checkers" to see how close the estimated number actually came.