总述:本次共解3题。其中
☆数学统计1题
☆算术计算1题
☆整数计算1题
〖1/3算式〗
作业:求算式 (1419+14319+143319+1433319+14333319)/43 的值.
题型:数学计算
解:
(1419+14319+143319+1433319+14333319)/43
=15925695/43
=370365 答案:(1419+14319+143319+1433319+14333319)/43=370365〖 2/3数据统计〗
作业:请统计以下数据: 6,7,7,8,8,9,5,3,4,8,12,11 。
题型:数据统计 数据总数:12
总和:88
平均值:7.33333
方差:6.38889
标准差:2.52763 *注:共统计5项内容。〖3/3整数列竖式计算〗
题型:整数乘法
原题:111111111*999999999 解:
111111111*999999999 =
111111110888888889 列竖式计算:
| | | | | | | | | | | | | | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
✖ | | | | | | | | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
|
| | | | | | | | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| | | | | | | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | |
| | | | | | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | | |
| | | | | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | | | |
| | | | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | | | | |
| | | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | | | | | |
| | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | | | | | | |
| | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | | | | | | | |
| | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | | | | | | | | |
|
| | | | | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 |
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