用递等式计算.841÷29+121 (42-2...

用递等式计算.841÷29+121 (42-23)×16 648÷(18×4) 96-84÷7.

(1)841÷29+121
=29+121
=150;

(2)(42-23)×16
=19×16
=304;

(3)648÷(18×4)
=648÷72
=9;

(4)96-84÷7
=96-12
=84.
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