Question

A number, rounded to 1 decimal place, is equal to 49.1 Write down the lower and upper bounds of the number.

Answer 1

To find the upper bound of divide the upper bound of x (numerator) by the lower bound of x (denominator). To find the lower bound of divide the lower bound of (numerator) by the upper bound of y (denominator). To find the upper bound of x – y , subtract the lower bound of y from the upper bound of .

Explanation: