IGCSE Mathematics Extended E1.10.2 Find upper and lower bounds of the results of calculations which have Question Bank

• Find upper and lower bounds of the results of calculations which have used data rounded to a specified accuracy. e.g. write down the upper bound of a length measured correct to the nearest metre. Example calculations include: • calculate the upper bound of the perimeter or the area of a rectangle given dimensions measured to the nearest centimetre • find the lower bound of the speed given rounded values of distance and time.