数学四年级简便运算
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/26 20:44:11
解题思路: 146×9+165 =146×9+146+19 =146×(9+1)+19 =146×10+19
解题过程:
146×9+165
解:146×9+165
=146×9+146+19
=146×(9+1)+19
=146×10+19
=1460+19
=1479
最终答案:略
解题过程:
146×9+165
解:146×9+165
=146×9+146+19
=146×(9+1)+19
=146×10+19
=1460+19
=1479
最终答案:略