Rounds each number to four significant figures. ( Could someone check if I'm right? Thanks)

a. 431801 = 4318
b. 10235.0 = 1024
c. 1.0348 = 1.035
d. 0.0004384010 = 0.0004384
e. 0.00078100 = 0.0007810
f. 0.0098641 = 0.009864

looks good to me