a) 3.217 x 100 = 321.7

b) 8.235 x 1000 = 8235

c) 3.113 x 10 = 31.13

d) 181.21 x 1000 = 181210

e) 3.217 : 10 = 0.3217

f) 81.235 : 100 = 0.81235

g) 181.21 : 1000 = 0.18121