题目内容
脱式计算.
| 60×3÷9 | 100-96÷6 | (927-108)÷7 |
| 946+720÷9 | 960÷6×4 | 405÷(201-196) |
分析:(1)(5)按照从左到右的顺序计算;
(2)先算除法,再算减法;
(3)先算小括号里面的减法,再算括号外的除法;
(4)先算除法,再算加法;
(6)先算小括号里面的减法,再算括号外的除法.
(2)先算除法,再算减法;
(3)先算小括号里面的减法,再算括号外的除法;
(4)先算除法,再算加法;
(6)先算小括号里面的减法,再算括号外的除法.
解答:解:(1)60×3÷9,
=180÷9,
=20;
(2)100-96÷6,
=100-16,
=84;
(3)(927-108)÷7,
=819÷7,
=117;
(4)946+720÷9,
=946+80,
=1026;
(5)960÷6×4,
=160×4,
=640;
(6)405÷(201-196),
=405÷5,
=81.
=180÷9,
=20;
(2)100-96÷6,
=100-16,
=84;
(3)(927-108)÷7,
=819÷7,
=117;
(4)946+720÷9,
=946+80,
=1026;
(5)960÷6×4,
=160×4,
=640;
(6)405÷(201-196),
=405÷5,
=81.
点评:解决本题关键是理清楚运算顺序,找出先算什么,再算什么,逐步求解即可.
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