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Students estimate a multiplication problem, share their methods, discuss the front-end method, and then do more problems using front-end.

Students discuss making an interval estimate in multiplication problems (i.e., getting a lower and an upper limit for the actual answer using the front-end and rounding-up estimation methods). They then use this method on two problems.

Students show how they estimate in some multiplication problems and come up with sensible estimates.

Students identify the larger of two improper fractions and drag a number of improper and mixed fractions into ascending order.