数一数，图中一共有多少个正方体？（每一层的中间是空的）6_5k-p-u;b/}0w-~5q-e-@6R6D7d
6_5k-p-u;b/}0w-~5q-e-@6R6D7d
算式：提示2`1X.q-B1b;C1c6_5k-p-u;b/}0w-~5q-e-@6R6D7d
答：图中一共有/R;R-T:b2C3f'Q个正方体。6_5k-p-u;b/}0w-~5q-e-@6R6D7d