题目内容
脱式计算
| 320-120÷2 | 400÷8×9 | (300-165)÷5 | 200+100÷5. |
(1)320-120÷2,
=320-60,
=260;
(2)400÷8×9,
=50×9,
=450;
(3)(300-165)÷5,
=135÷5,
=27;
(4)200+100÷5,
=200+20,
=220.
=320-60,
=260;
(2)400÷8×9,
=50×9,
=450;
(3)(300-165)÷5,
=135÷5,
=27;
(4)200+100÷5,
=200+20,
=220.
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