Chapter 14- Solve Three-Digit Addition and Subtraction Problems
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.
14-5 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.