(答え) |
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(1) |
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× |
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= |
5 1 |
= |
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10 |
11 |
10×11 |
5 |
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11 |
12 |
11×12 |
6 |
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1 6 |
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(2) |
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× |
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= |
1 2 |
= |
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13 |
10 |
13×10 |
2 |
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15 |
13 |
15×13 |
3 |
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3 1 |
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(3) |
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× |
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= |
5 5 |
= |
|
15 |
20 |
15×20 |
25 |
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|
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16 |
21 |
16×21 |
28 |
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|
4 7 |
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(4) |
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× |
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= |
2 4 |
= |
|
18 |
28 |
18×28 |
8 |
|
|
|
|
35 |
45 |
35×45 |
25 |
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5 5 |
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(5) |
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× |
|
= |
5 1 |
= |
|
45 |
14 |
45×14 |
5 |
|
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|
|
56 |
27 |
56×27 |
12 |
|
|
4 3 |
|
|
(6) |
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× |
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= |
3 3 |
= |
|
15 |
57 |
15×57 |
9 |
|
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38 |
65 |
38×65 |
26 |
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|
2 13 |
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(7) |
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× |
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= |
1 2 |
= |
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29 |
52 |
29×52 |
2 |
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78 |
87 |
78×87 |
9 |
|
|
3 3 |
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(8) |
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× |
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= |
1 2 |
= |
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19 |
74 |
19×74 |
2 |
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37 |
95 |
37×95 |
5 |
|
|
1 5 |
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(9) |
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× |
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= |
1 6 |
= |
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13 |
18 |
13×18 |
6 |
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75 |
65 |
75×65 |
125 |
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25 5 |
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(10) |
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× |
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= |
19 16 |
= |
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57 |
64 |
57×64 |
304 |
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92 |
87 |
92×87 |
667 |
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23 29 |
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