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13问答网 > 套套在计算一个两位数乘6看错成了9了，结果正确答案多90正确答案是多少？

套套在计算一个两位数乘6看错成了9了，结果正确答案多90正确答案是多少？

2025-03-15 18:06:03

推荐回答（4个）

回答1：

设那个两位数为a
9a-6a=90
解得：a=30
正确的答案是：30×6=180
(把6看成9后结果是：
30×9=270，比答案多了270-180=90符合题意)

回答2：

两位数是：90÷（9-6）=30
正确答案是：30×6=180

回答3：

这个两位数是30，正确答案
30Ⅹ6=180，看错成9，计算得:
30x9=270，270一180=90多了90

回答4：

90÷(9－6)×6
=90÷3×6
=30×6
=180
正确答案是180

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