问题 解答题

能简便计算的要简便计算

5947-35×64

39×(396÷6)

487+199

823-699.

答案

(1)5947-35×64

=5947-2240

=3707;

(2)39×(396÷6)

=39×66

=2574;

(3)487+199

=487+200-1

=287-1

=286;

(4)823-699

=823-(700-1)

=823-700+1

=123+1

=124.

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