2桁同士の乗算

(1)

56
×
55

(2)

22
×
85

(3)

43
×
20

(4)

10
×
3

(5)

33
×
76

(6)

28
×
54

(7)

76
×
42

(8)

60
×
34

(9)

57
×
56

(10)

27
×
15

(11)

96
×
19

(12)

56
×
89

(13)

82
×
39

(14)

32
×
40

(15)

90
×
99

(16)

66
×
3