Multiplication till 400

Calculate:

Number of examples:
Numerical difficulty:
Range of values:
Multiplicity:

11	×	20	=
14	×	8	=
16	×	24	=
21	×	18	=
6	×	5	=
9	×	11	=
12	×	17	=
18	×	18	=
9	×	9	=
8	×	9	=