Multiplication till 400

Calculate:

The number of examples:
Numerical difficulty:
Range of values:
Multiplicity:

14	×	16	=
9	×	24	=
4	×	5	=
16	×	17	=
7	×	5	=
17	×	21	=
7	×	6	=
10	×	13	=
8	×	6	=
13	×	7	=