分数×分数の計算(1)

分数×分数の計算が出題されます。

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使い方をみる

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/20

(1)
17
×
47
=
449
(2)
28
×
68
=
316
(3)
17
×
29
=
263
(4)
25
×
13
=
215
(5)
46
×
35
=
25
(6)
89
×
78
=
79
(7)
68
×
19
=
112
(8)
14
×
27
=
114
(9)
89
×
46
=
1627
(10)
27
×
47
=
849
(11)
46
×
14
=
16
(12)
15
×
59
=
19
(13)
12
×
68
=
38
(14)
69
×
57
=
1021
(15)
17
×
68
=
328
(16)
24
×
89
=
49
(17)
89
×
16
=
427
(18)
48
×
45
=
25
(19)
67
×
16
=
17
(20)
35
×
35
=
925

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