题目内容
脱式计算.
| (185+220)÷9= | 721÷7×5= | 120-80÷5= |
(1)(185+220)÷9,
=405÷9,
=45;
(2)721÷7×5,
=103×5,
=515;
(3)120-80÷5,
=120-16,
=104.
=405÷9,
=45;
(2)721÷7×5,
=103×5,
=515;
(3)120-80÷5,
=120-16,
=104.
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