Question

Estimate the product 2 1/6 x 4 1/2 then find each product

Answer 1

2 1/6 is about 2 and 4 1/2 is about 5 so we multiply the two to get 10
The actual answer would be 13/6 * 9/2 = 117/12 = 9 and 9/12 or 9 and 3/4, so we know the estimate was good