Computation and Estimation
Virginia SOL 4.CE.1
Estimate, represent, solve, and justify solutions to single-step and multistep problems involving addition and subtraction with whole numbers.
What students need to be able to do
- Determine and justify whether an estimate or an exact answer is appropriate for contextual problems involving addition and subtraction with whole numbers.
- Apply strategies (e.g., rounding, compatible numbers) to estimate solutions for single-step or multistep addition or subtraction problems with whole numbers.
- Apply strategies and algorithms, including the standard algorithm, to determine the sum or difference of two whole numbers.
- Estimate, represent, solve, and justify solutions to single-step and multistep contextual problems involving addition and subtraction with whole numbers up to 1,000,000.