3.79×78+5.21×78+78=?用简便方法计算

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/14 14:27:52
3.79×78+5.21×78+78=?用简便方法计算3.79×78+5.21×78+78=?用简便方法计算3.79×78+5.21×78+78=?用简便方法计算3.79×78+5.21×78+78=

3.79×78+5.21×78+78=?用简便方法计算
3.79×78+5.21×78+78=?用简便方法计算

3.79×78+5.21×78+78=?用简便方法计算
3.79×78+5.21×78+78
=78×(3.79+5.21+1)
=78×10
=780