Question

Jamie says the value of1.49 (-15/29) is close to -0.75.Student A says this estimate is reasonable because the product is negative and about half of 1.5.Student B says you could find the product using a calculator as follows :divide -15 by 29 ,multiply the quotient by 1.43 then round the product to the nearest 100's.Does student B approach to find the product justify the claim that Jamie estimates is reasonable?

Answer 1

Student B method yields the result -0.77 which is close to -0.75. So Jame's estimate is reasonable.