Question

. Report the correct number of
significant figures.
a. 87.3 + 0.001 =
b. 0.201 + 0.92 =
c. 320 + 8.41 =
d. 1200 – 60 =

Answer 1

Answer:

$87.3 + 0.001 = 87.301$

$0.201 + 0.92 =1.121$

$320 + 8.41 =328.41$

$1200-60=1140$

Explanation:

Solving (a): 87.3 + 0.001 =

87.3 --> 3 significant figures

0.001 --> 1 significant figure

So, the answer must be in at least 3 significant figures

$87.3 + 0.001 = 87.301$

Solving (b): 0.201 + 0.92 =

0.201 --> 3 significant figures

0.92 --> 2 significant figures

So, the answer must be in at least 3 significant figures

$0.201 + 0.92 =1.121$

Solving (c): 320 + 8.41 =

320 --> 2 significant figures

8.41 --> 3 significant figures

So, the answer must be in at least 3 significant figures

$320 + 8.41 =328.41$

Solving (d): 1200 – 60 =

1200 --> 2 significant figures

60 --> 1 significant figure

So, the answer must be in at least 2 significant figures

$1200-60=1140$