2桁同士の乗算

(1)

33
×
61

(2)

4
×
56

(3)

29
×
91

(4)

63
×
56

(5)

4
×
81

(6)

4
×
17

(7)

15
×
90

(8)

25
×
84

(9)

51
×
99

(10)

54
×
17

(11)

85
×
59

(12)

62
×
32

(13)

7
×
19

(14)

90
×
39

(15)

86
×
21

(16)

49
×
11

(17)

38
×
98

(18)

17
×
27

(19)

79
×
34

(20)

78
×
25

(21)

51
×
34

(22)

89
×
97

(23)

94
×
5

(24)

21
×
17

(25)

69
×
85

(26)

34
×
7

(27)

11
×
9

(28)

45
×
22

(29)

23
×
54

(30)

61
×
99

(31)

62
×
43

(32)

25
×
39