题目内容
| 计算下面各题. 60+40×3 |
75-75÷5 | 720÷8×9 |
| 19×(100-78) | (86+54)÷28 | 207-(47-29) |
(1)60+40×3,
=60+120,
=180;
(2)75-75÷5,
=75-15,
=60;
(3)720÷8×9,
=90×9,
=810;
(4)19×(100-78),
=19×22,
=418;
(5)(86+54)÷28,
=140÷28,
=5;
(6)207-(47-29),
=207-18,
=189.
=60+120,
=180;
(2)75-75÷5,
=75-15,
=60;
(3)720÷8×9,
=90×9,
=810;
(4)19×(100-78),
=19×22,
=418;
(5)(86+54)÷28,
=140÷28,
=5;
(6)207-(47-29),
=207-18,
=189.
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