Question

Perform the following calculations and report each answer with the correct number of significant figures. (For this problem – you have to show all the calculation steps – you can handwrite it on another piece of paper, take a picture of it, and submit it.)

a) 62.8 x 34

b) 0.147/0.0066/0.012

c) 38 x 95 x 1.792

d) 15 - 0.15 - 0.6155

e) 8.78 x (0.0500/0.478)

f) 140/7.68/0.014

g) 28.7 - 0.0483

h) (88.5 - 87.57)/45.13

Answer 1

Ans

a) During multiplication the answer must have the number of significant figures as present in least precise figure

So 62.8 x 34 = 2100

b) during division , the answer must contain the number of significant figures as present in least precise figure.

So 0.147/0.0066/0.012 = 1900

c) during multiplication the answer must have the number of significant figures as present in least precise figure i.e.2

so 38 * 95 * 1.792 = 6500

d) Again in the subtraction also , the significant figures in the answer must not have more figures than the least precise figure.

so 15-0.15-0.6155 = 14