题目内容
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(1)
÷
=
×
=
;
(2)3÷
=3×4=12(吨);
(3)20÷(1-
),
=20÷
,
=100(米).
故答案为:
,12,100.
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(2)3÷
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(3)20÷(1-
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=20÷
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=100(米).
故答案为:
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