Computation and Estimation

Virginia SOL 3.CE.1

Estimate, represent, solve, and justify solutions to addition and subtraction problems with whole numbers up to 1,000.

What students need to be able to do

  • Determine whether an estimate or exact answer is appropriate for single-step or multistep addition or subtraction problems.
  • Estimate solutions for addition or subtraction problems using strategies like rounding or compatible numbers.
  • Apply the standard algorithm to determine the sum or difference of two whole numbers up to 1,000.
  • Solve single-step and multistep contextual problems involving addition and subtraction with whole numbers up to 1,000.