问题 解答题

脱式计算.

①(710+190)×7

②960÷6×4

③756÷7÷6

④128+840÷6.

答案

①(710+190)×7

=900×7

=6300;

②960÷6×4

=160×4

=640;

③756÷7÷6

=108÷6

=18;

④128+840÷6

=128+140

=268.

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