丫口小学有一块面积是490平方米的长方形苗圃，苗圃的长是35米，宽是多少米？
口算．+=﹣=+=﹣=+=+=﹣= 2﹣= 1﹣﹣=
直接写出得数．﹣=+=+=+= 1﹣=﹣= 3+=﹣= 3﹣1=+=+=+3=
．
直接写出得数．﹣= 0.7﹣0.62= 12÷25== 10=+×0= 13×= 10=
直接写得数．+=+= 1﹣=﹣=﹣=+=﹣1=﹣= 3﹣1=+=
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= 0.7﹣0.62= 12÷25=
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×0= 13
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= 1﹣
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﹣1=
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