Adding till 100

Calculate:

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

47	+	23	=
42	+	43	=
4	+	4	=
22	+	23	=
11	+	17	=
12	+	6	=
34	+	39	=
3	+	8	=
50	+	45	=
31	+	35	=