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Chapter 2: Q7. (page 103)

Explain how you can use estimation to check that the answer of the expression 3.1路-6.8is reasonable.

Short Answer

Expert verified

The value of the expression 3.1路-6.8 is -21.08 which is reasonable.

Step by step solution

01

– Given information.

The given expression is:

3.1路-6.8

02

– Write the concept.

Since the number 3.1鈮�3 and -6.8鈮�-7.

So, use the expression 3路-7

03

– Evaluate the expression.

The expression 3路-7 becomes:

3路-7=-21

And the given expression 3.1路-6.8 is -21.08.

Therefore, the answer -21.08 is reasonable.

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