0.160.61 3.01吨3.010吨
0.0580. 052 9.5米9米5厘米
⑴90200009200000 ⑵28亿2800000000
⑶125×80250×40 ⑷10个一百万1亿
1.6-0.16=
3.7+7.3=
2.5×8=
0.87-0.7=
380×0.01=
0.75×4=
30×0.14=
65÷1000=
千
百
十
个
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