LESSON 2 All-Partials Revisited

TIMSville built a new school. The new school has 24 classrooms. Each classroom has 28 desks. How many desks are in the new school?

1. Estimate the number of desks in the new school. Remember to choose numbers that are easy to multiply in your head. Then compare your estimate to Ana's exact solution below.

Ana computed the product using the all-partials method:



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1. Explain how Ana got each one of her partial products. How did she get her final answer?
2. Is Ana's exact answer reasonable? Is it close to your estimate?