题目内容
脱式计算.
| 261-(210+165)÷15 | 12×15+567÷21 |
| 1320÷(149-61)×320 | (451-169)×(667÷29) |
(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.
=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.
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