Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
Represent multi-step word problems as equations and solve them, including word problems involving remainders. Also, practice estimating solutions to multi-step word problems. This skill extends the 3rd grade skill of solving two-step word problems involving the four operations. Conclude by giving your students this challenge.