An engineer may round a measurement to 2 or 3 significant figures because they can’t measure any more accurately. Using your maths skills, help to build bridges and bring light back to the ...

The first two significant figures are 5 and 2. As the next digit is 4 the 2 stays as it is. Therefore 5246 rounds to 5200 to 2 significant figures. (Notice that we must put in zeros to keep the ...