2桁同士の乗算

(1)

51
×
1887

(2)

86
×
2494

(3)

60
×
5040

(4)

75
×
5625

(5)

×
91
4368

(6)

×
91
8281

(7)

×
38
3040

(8)

×
72
7056

(9)

×
88
3344

(10)

87
×
4872

(11)

34
×
2074

(12)

64
×
4224

(13)

×
48
4656

(14)

25
×
925

(15)

93
×
4185

(16)

75
×
6750