题目内容

脱式计算。                                                                               
(1)205×3×3  (2)480×5+200 (3)124×3×2
(4)2×438×4 (5)116×3+184 (6)250×2×3
 
(1)205×3×3 
        =615×3
        =1845
(2)480×5+200
        =2400+200
        =2600
(3)124×3×2
        =372×2
        =744
(4)2×438×4
       =876×4
       =3504
(5)116×3+184
        =348+184
        =532
(6)250×2×3
        =500×3
        =1500
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