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.

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