Question

estimate the product of 7899 and 5083 with actual product .​

Answer 1

Step-by-step explanation:

Ans: Tearing of paer is a physical change because no new substance is formed, as the paper's colour will be the same. = Burning of paper is a chemical change because a new substance is formed i.e. ash and the paper's colour will too change. Tearing if paper is a physical change because no new substance is formed.

Answer 2

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7899= 7889 7899 is rounded down to 7890..

5083= 5090 5083 is rounded up to 5090

7899 ⟶ 7889. 7899 is rounded down

to 7889

5083 ⟶ 5090. 5083 is rounded up to

5090

Calculate mentally 7889×5090 = 40155010

The estimate product is 40155010

Step-by-step explanation:

hope it helps you