简便方法计算各题 4.86×9.9 4.9×1.02

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/26 04:24:30
简便方法计算各题4.86×9.94.9×1.02简便方法计算各题4.86×9.94.9×1.02简便方法计算各题4.86×9.94.9×1.024.86×9.9=4.86×(10-0.1)=4.86×

简便方法计算各题 4.86×9.9 4.9×1.02
简便方法计算各题 4.86×9.9 4.9×1.02

简便方法计算各题 4.86×9.9 4.9×1.02
4.86×9.9
=4.86×(10-0.1)
=4.86×10-4.86×0.1
=48.6-0.486
=48.114
4.9×1.02
=4.9×(1+0.02)
=4.9×1+4.9×0.02
=4.9+0.098
=4.998