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Teaching children to read well from the start is
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More than 20 people in traffic accidents
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结果,正确,粗心大意
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Teaching children to read well from the start is
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More than 20 people in traffic accidents
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题目小马虎由于粗心大意把30×(□+3)错算成30×□+3,请你帮忙算一算,他得到的结果与正确结果相差多少?可圈可点用户2021-03-25 11:44优质解答答案30×(□+3),=30×□
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题目
小马虎由于粗心大意把30×(□+3)错算成30×□+3,请你帮忙算一算,他得到的结果与正确结果相差多少?
可圈可点用户
2021-03-25 11:44
优质解答
30×(□+3),
=30×□+30×3,
=30×□+90,
30×□+90-(30×□+3),
=30×□+90-30×□-3,
=90-3,
=87;
答:他得到的结果与正确结果相差87.
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