standard_description: Explain why addition and subtraction strategies work, using place value and the properties of operations. (Explanations may be supported by drawings or objects.)
problem_activity: Problem 1
Solve.
$${581\div27}$$
Problem 2
Plywood comes in sheets that are 32 square feet. A roofer needs 341 square feet of plywood for a job. How many sheets of plywood does the roofer need?


aligns: no