9千米=______米; |
4000千克=______吨; |
60毫米=______厘米; |
80厘米=______分米; |
50分米=______米; |
2000克=______千克; |
6米=______厘米; |
7分米=______毫米; |
28毫米+52毫米=______毫米=______厘米; |
9厘米+31厘米=______厘米=______分米; |
3米-25分米=______分米; |
40米÷______=5; |
600千克+1400千克=______吨; |
30米÷6=______分米; |
3吨-800千克=______千克; |
4分米×5=______米. |
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