**Chapter 14- Solve Three-Digit Addition and Subtraction Problems**

**Summary**

**14-1 Add Hundreds:** I can use basic facts and mental math to add hundreds.

**14-2 Regroup Ones:** I can find the sum of two three-digit numbers, regrouping ones.

**14-3 Regroup Tens:** I can add three-digit numbers with and without regrouping.

**14-4 PSS: Make a Table:** I can use *make a table* as a strategy to solve problems.

**14-5 Estimate Sums:** I can estimate the sum of three-digit addends by rounding.

**14-6 Subtract Hundreds:** I can use basic facts and mental math to subtract hundreds.

**14-7 Regroup Tens:** I can regroup tens to subtract three-digit numbers.

**14-8 Regroup Hundreds:** I can regroup hundreds to subtract three-digit numbers.

**14-9 Estimate Differences:** I can estimate the difference of three-digit numbers by rounding.

**14-10 PSS: Choose a Strategy: ** I can choose the best strategy to solve problems.