222ᠧ9+666ᠧ7怎么简算?

2024-11-25 12:33:02
推荐回答(1个)
回答1:

答案:
222×9+666×7
=222×9+222×3×7
=222×9+222×21
=222×(9+21)
=222×30
=6660
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