46.3*0.56+5.38+5.6-0.056简算
答案:4 悬赏:30 手机版
解决时间 2021-01-17 16:04
- 提问者网友：沉默的哀伤
- 2021-01-17 12:42
46.3*0.56+5.38+5.6-0.056简算
最佳答案
- 五星知识达人网友：洎扰庸人
- 2021-01-17 12:57
46.3*0.56+5.38+5.6-0.056
=46.3*0.56+53.8+0.56-0.56×0.1
=（46.3+53.8-0.1）×0.56
=100×0.56
=56追问是5.38不是53.8追答46.3*0.56+5.38×5.6-0.056
=46.3*0.56+53.8×0.56-0.56×0.1
=（46.3+53.8-0.1）×0.56
=100×0.56
=56
中间是乘号，5.38扩大10倍，5.6缩小10倍，乘积不变。追问得数不对吧
追答题目有问题，简便运算题，5.38+5.6应该是：5.38×5.6
=46.3*0.56+53.8+0.56-0.56×0.1
=（46.3+53.8-0.1）×0.56
=100×0.56
=56追问是5.38不是53.8追答46.3*0.56+5.38×5.6-0.056
=46.3*0.56+53.8×0.56-0.56×0.1
=（46.3+53.8-0.1）×0.56
=100×0.56
=56
中间是乘号，5.38扩大10倍，5.6缩小10倍，乘积不变。追问得数不对吧
追答题目有问题，简便运算题，5.38+5.6应该是：5.38×5.6
全部回答
- 1楼网友：举杯邀酒敬孤独
- 2021-01-17 16:02
规范
- 2楼网友：封刀令
- 2021-01-17 14:58
简单
- 3楼网友：思契十里
- 2021-01-17 14:05
46.3*0.56+5.38+5.6-0.056
=4.63*5.6+5.38+5.6-5.6*0.01
=（4.63+5.38-0.01）*5.6
=10*5.6
=56追问4.63*5.6+5.38+5.6-5.6*0.01这怎么成了4.63？追答这是小数点的移动规律
=4.63*5.6+5.38+5.6-5.6*0.01
=（4.63+5.38-0.01）*5.6
=10*5.6
=56追问4.63*5.6+5.38+5.6-5.6*0.01这怎么成了4.63？追答这是小数点的移动规律
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