70.08-1.25-1.75 4.6+2.89+5.4+3
答案:2 悬赏:70 手机版
解决时间 2021-03-08 01:32
- 提问者网友:疯子也有疯子的情调
- 2021-03-07 17:03
70.08-1.25-1.75 4.6+2.89+5.4+3.1122×10145×36+54×36+36 25×(4×27)85×99+85.
最佳答案
- 五星知识达人网友:十鸦
- 2019-06-09 19:48
解:(1)70.08-1.25-1.75,
=70.08-(1.25+1.75),
=70.08-3,
=67.08;
(2)4.6+2.89+5.4+3.11,
=(4.6+5.4)+(2.89+3.11),
=10+6,
=16;
(3)22×101,
=22×100+22×1,
=2200+22,
=2222;
(4)45×36+54×36+36,
=(45+54+1)×36,
=100×36,
=3600;
(5)25×(4×27),
=(25×4)×27,
=100×27,
=2700;
(6)85×99+85,
=85×(99+1),
=85×100,
=8500.解析分析:(1)依据减法性质解答;
(2)运用加法交换律和结合律解答;
(3)(4)(6)运用乘法分配律解答;
(5)运用乘法结合律解答.
点评:完成本题要注意分析式中数据,运用合适的简便方法计算.
=70.08-(1.25+1.75),
=70.08-3,
=67.08;
(2)4.6+2.89+5.4+3.11,
=(4.6+5.4)+(2.89+3.11),
=10+6,
=16;
(3)22×101,
=22×100+22×1,
=2200+22,
=2222;
(4)45×36+54×36+36,
=(45+54+1)×36,
=100×36,
=3600;
(5)25×(4×27),
=(25×4)×27,
=100×27,
=2700;
(6)85×99+85,
=85×(99+1),
=85×100,
=8500.解析分析:(1)依据减法性质解答;
(2)运用加法交换律和结合律解答;
(3)(4)(6)运用乘法分配律解答;
(5)运用乘法结合律解答.
点评:完成本题要注意分析式中数据,运用合适的简便方法计算.
全部回答
- 1楼网友:举杯邀酒敬孤独
- 2020-05-05 17:50
这下我知道了
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