The key strategies for solving multi-step word problems include understanding the story situations, breaking down the problems into steps, identifying the operations involved, and writing equations for each step.
Estimation can help assess the reasonableness of answers in multi-step word problems by rounding numbers and making reasonable estimates without calculating the final answer. It allows students to check if their answer falls within a reasonable range based on their estimation.
Creating stories using objects and numbers enhances problem-solving skills by allowing students to focus on the situation, understand it, and put plausible numbers in the story to complete and solve the problem. It helps develop critical thinking skills and encourages students to think creatively about different scenarios.