Question

Round off each of the calculator answers in problem$2.23$to two significant figures.

Short answer

The round-off values of problem $2.23$, round off the value of $1.854kg$is $1.9kg$, $88.2038kg$is $88kg$, $0.0004738265cm$is $0.0047cm$, $8807m$is $8800m$and $1.832\times {10}^5$is$1.8\times {10}^5$.

Step-by-step solution

Given Information

We need to round off each of the calculator values in the problem$2.23$to two significant figures.

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 $5$or 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) $1.832\times {10}^5$

The round off of the number is$1.8\times {10}^5$.