①()厘米:20千米=1/5000 ②1厘米:()千米=1/1000 ③1厘米:()千米=1/600000
④()厘米:600米=1/2000 ⑤()厘米:7000米=1/10000
⑥()米:2厘米=100/1 ⑦()米:5厘米=50/1
人气:430 ℃ 时间:2020-05-13 09:22:55
解答
①(400)厘米:20千米=1/5000
②1厘米:(0.01)千米=1/1000
③1厘米:(6)千米=1/600000
④(30)厘米:600米=1/2000 ⑤(70)厘米:7000米=1/10000
⑥(2)米:2厘米=100/1 ⑦(2.5)米:5厘米=50/1
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