2桁同士の乗算

(1)

×
29
1508

(2)

40
×
3520

(3)

59
×
1239

(4)

×
52
3328

(5)

×
82
4838

(6)

×
20
1320

(7)

40
×
520

(8)

25
×
650

(9)

93
×
1674

(10)

45
×
3375

(11)

80
×
3920

(12)

72
×
1872

(13)

×
37
888

(14)

×
76
7448

(15)

×
94
6486

(16)

×
51
1836