45÷5×7,
=9×7,
=63(米).
答:这根据铁丝长63米.
一根绳子的5倍是45米,一根铁丝是这根绳子的7倍.这根铁丝长多少米?
一根绳子的5倍是45米,一根铁丝是这根绳子的7倍.这根铁丝长多少米?
数学人气:890 ℃时间:2020-04-29 05:44:39
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