Standard 4.OA.3
Solve multi-step word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted.
1. Represent these problems using equations with a letter standing for the unknown quantity.
2. Assess the reasonableness of answers using mental computation and estimation strategies, including rounding.
Explanation: In this standard we ask students to solve multi-step word problems like:
A dog owner bought 7 bags of dog food for $140, with each bag containing 1,320 cups. Knowing she will divvy up the cups among her 4 dogs, with each dog getting the same number of cups, how many cups will each dog get?
The first thing the student must do is multiply 1320 X 7 = 9240.
The second step would be to divide 9240 / 4 = 2310.
We also show the students that some information on the question might not be needed, such as the cost of the dog food.
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