脱式计算. 261-(210+165)÷15 12×15+567÷21 1320÷(149-61)×320 (451-169)×(667

2025-05-17 11:57:43
推荐回答(1个)
回答1:

(1)261-(210+165)÷15,
=261-375÷15,
=261-25,
=236;

(2)12×15+567÷21,
=180+27,
=207;

(3)1320÷(149-61)×320,
=1320÷88×320,
=15×320,
=4800;

(4)(451-169)×(667÷29),
=282×23,
=6486.