Once your mathematicians can add two-digit numbers, it's time to bring on the three-digit addends. Here are 20 practice problems, each involving two whole-number addends. Learners do not need to regroup for any of these, and they have three examples to guide their calculating. Once they've finished these, there's a bonus round: scholars solve five money-math problems, adding monetary values with decimals. Again, there is no borrowing for these, but scholars do need to bring the decimal and dollar sign down into their sums.