题目内容
加倍与一半
|
15 |
25 |
35 |
45 |
|
|
加倍: |
□ |
□ |
□ |
□ |
|
50 |
48 |
46 |
44 |
|
|
一半: |
□ |
□ |
□ |
□ |
答案:30;50;70;90;25;24;23;22
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