
脱式计算 841÷29+121 (42-23)×16 648÷(18×4) 960-84÷7
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(1)841÷29+121,
=29+121,
=150;
(2)(42-23)×16,
=19×16,
=304;
(3)648÷(18×4),
=648÷72,
=9;
(4)960-84÷7,
=960-12,
=948.
=29+121,
=150;
(2)(42-23)×16,
=19×16,
=304;
(3)648÷(18×4),
=648÷72,
=9;
(4)960-84÷7,
=960-12,
=948.
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