1题是:13.91乘8+6.09除0.125 二题是:2.93乘5.4+29.3除0.46一定要是简便,有理由,为什么这么算?第一题是13.91乘8+6.09除0.125 第二题是2.93乘5.4+29.3乘0.46
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/24 02:19:15
![1题是:13.91乘8+6.09除0.125 二题是:2.93乘5.4+29.3除0.46一定要是简便,有理由,为什么这么算?第一题是13.91乘8+6.09除0.125 第二题是2.93乘5.4+29.3乘0.46](/uploads/image/z/190437-69-7.jpg?t=1%E9%A2%98%E6%98%AF%EF%BC%9A13.91%E4%B9%988%2B6.09%E9%99%A40.125+%E4%BA%8C%E9%A2%98%E6%98%AF%EF%BC%9A2.93%E4%B9%985.4%2B29.3%E9%99%A40.46%E4%B8%80%E5%AE%9A%E8%A6%81%E6%98%AF%E7%AE%80%E4%BE%BF%2C%E6%9C%89%E7%90%86%E7%94%B1%2C%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%99%E4%B9%88%E7%AE%97%3F%E7%AC%AC%E4%B8%80%E9%A2%98%E6%98%AF13.91%E4%B9%988%2B6.09%E9%99%A40.125+%E7%AC%AC%E4%BA%8C%E9%A2%98%E6%98%AF2.93%E4%B9%985.4%2B29.3%E4%B9%980.46)
1题是:13.91乘8+6.09除0.125 二题是:2.93乘5.4+29.3除0.46一定要是简便,有理由,为什么这么算?第一题是13.91乘8+6.09除0.125 第二题是2.93乘5.4+29.3乘0.46
1题是:13.91乘8+6.09除0.125 二题是:2.93乘5.4+29.3除0.46
一定要是简便,有理由,为什么这么算?
第一题是13.91乘8+6.09除0.125
第二题是2.93乘5.4+29.3乘0.46
1题是:13.91乘8+6.09除0.125 二题是:2.93乘5.4+29.3除0.46一定要是简便,有理由,为什么这么算?第一题是13.91乘8+6.09除0.125 第二题是2.93乘5.4+29.3乘0.46
1.
13.91×8+6.09÷0.125 (÷0.125就是×8)
=13.91×8+6.09×8
=(13.91+6.09)×8
=20×8
=160
2.先说一句,题应为“2.93乘5.4+29.3乘0.46”吧.
2.93×5.4+29.3×0.46
=29.3×0.54+29.3×0.46
=29.3×(0.54+0.46)
=29.3
(1):原式=13.91*8+6.09*8=(13.91+6.09)*8=20*8=160;
(2):原式=2.93*5.4+(2.93*10)*0.46=2.93*(5.4+4.6)=2.93*10=29.3:
完毕啦!
1.
13.91×8+6.09÷0.125 (÷0.125就是×8)
=13.91×8+6.09×8
=(13.91+6.09)×8
=20×8
=160
2.2.93×5.4+29.3×0.46
=29.3×0.54+29.3×0.46
=29.3×(0.54+0.46)
=29.3
1.
13.91*8-6.09/0.125
=13.91*8+6.09*8
=(13.91+6.09)*8
=20*8
=160
因为1/0.125=8
2.是乘以0.46吧,不然就不简便了
2.93*5.4+29.3*0.46
=2.93*5.4+2.93*4.6
=2.93+(5.4+4.6)
=2.93*10
=29.3
呵呵,应该是这样吧