3千米=______米; 6500千克=______吨______千克;6米=______分米; ...
3千米=______米;6500千克=______吨______千克;6米=______分米;59.06米=______厘米;3吨=______千克;5000千克+300...
3千米=______米; 6500千克=______吨______千克;6米=______分米; 59.06米=______厘米;3吨=______千克; 5000千克+3000千克=______吨.
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