一个棱长4分米的正方体水箱装满水，如果把这箱水倒入另一个长8分米，宽2.5分米的长方体水箱中，水深是多少？
直接写出得数．========
直接写出得数．============
计算．﹣++（+） 7﹣（﹣）．
直接写得数：+=﹣=﹣=﹣=+=﹣= 1﹣=+=﹣=+=+5= 5﹣=
直接写得数．+=+=﹣= 0.25×8= 0.9×0.2=﹣=+= 10﹣= 1.25×（0.8+0.08）= 0.25×3.2=
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= 0.25×8= 0.9×0.2=
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= 10﹣
= 1.25×（0.8+0.08）= 0.25×3.2=
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