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Chapter 2: Q. 2.24 (page 35)

Round off each of the calculator answers in problem2.23to two significant figures.

Short Answer

Expert verified

The round-off values of problem 2.23, round off the value of 1.854kgis 1.9kg, 88.2038kgis 88kg, 0.0004738265cmis 0.0047cm, 8807mis 8800mand 1.832×105is1.8×105.

Step by step solution

01

Given Information

We need to round off each of the calculator values in the problem2.23to two significant figures.

02

Simplify

Following the basic rules, first, if the first digit which dropped is less than it and all following digits are simply dropped from the number.

And second, if the first digit to be dropped is 5or more, then the last retained digit of that number will be increased by 1.

(a) 1.854kg

The round off of the number is role="math" localid="1652007743953" 1.9kg.

(b) 88.2038kg

The round off of the number is 88kg.

(c) 0.004738265cm

The round off of the number is 0.0047cm.

(d) 8807m

The round off of the number is 8807m.

(e) 1.832×105

The round off of the number is1.8×105.

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