First, I modeled some problems and had the students practice using resources from one of my products: Rounding and Estimating Practice.
Next, we sorted some story problems. Some problems asked students to estimate. Some required students to find the exact answer.
I used this as a guided practice activity so I could be sure students knew exactly how I wanted them to show their work. These problems all had clue words. I don't teach students to rely heavily on clue words, however. I make a point of teaching them other strategies such as visualizing and drawing part-part-whole diagrams.
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