问题
解答题
脱式计算.
37×64+37×136
246÷6×135-2645
(127+47)×15÷5
(550-400)÷5×247.
答案
(1)37×64+37×136,
=37×(64+136),
=37×200,
=7400;
(2)246÷6×135-2645,
=41×135-2645,
=5535-2645,
=2890;
(3)(127+47)×15÷5,
=174×15÷5,
=2610÷5,
=522;
(4)(550-400)÷5×247,
=150÷5×247,
=30×247,
=7410.