能简算的用简便方法算．
2.5×3.4×0.4 8.24﹣2.68﹣1.32 6.5×2.3+6.5×6.7+6.5
7.8÷0.25÷4 1.37×99 2.5×32×1.25．
能简算的用简便方法算．
2.5×3.4×0.4 8.24﹣2.68﹣1.32 6.5×2.3+6.5×6.7+6.5
7.8÷0.25÷4 1.37×99 2.5×32×1.25．
试题篮
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