Which is smaller?

A. 0.1456

B. 0.0321

It should be answer B. With 0.0321 there is a zero both before and after the decimal, while answer A only has one before the decimal.

B is smaller.

Look in the tenths place, A has a 1 and B has a 0.

Which number is greater? 1 is greater than 0.

Also, A has one tenth while B has a fraction of a tenth.

So, B. 0.0321 is smaller.