Question

Solve the problems. Express your answers to the correct number of significant figures. 0.09 + 1.324 = 41.0 + 78.3 =

Answer 1

As per as the Addition rules of the significant figures, whenever any numbers in the decimals forms are added then result in mentioned in such a way so that the significant figures after the decimal will be same as that in the given least condition.

So, out of the given numbers, the number having the least significant figures after the decimals is 41.0 , in which there is no significant figure after the decimals. So Result will come in terms of it only.

Addition of the above will give,

0.09 + 1.324 + 41.0 + 78.3 = 120.714

Now, Let us make it in the correct form. 120.714 can be written as 121.

This will be the required result, because after decimal there will  be no significant figures.

Hope it helps.