问题
解答题
脱式计算.
|
答案
(1)144×3×5,
=432×5,
=2160;
(2)300-86×3,
=300-258,
=42;
(3)(84+116)×4,
=200×4,
=800;
(4)304+106×5,
=304+530,
=834;
(5)102×4×5,
=408×5,
=2040;
(6)350+15×6,
=350+90,
=440.
脱式计算.
|
(1)144×3×5,
=432×5,
=2160;
(2)300-86×3,
=300-258,
=42;
(3)(84+116)×4,
=200×4,
=800;
(4)304+106×5,
=304+530,
=834;
(5)102×4×5,
=408×5,
=2040;
(6)350+15×6,
=350+90,
=440.